An angle of 0 radians is an angle along the positive x-axis of the unit circle. Its terminal point is (1, 0).
The tangent of 0 radians is defined as the ratio of the y-coordinate to the x-coordinate of the terminal point, which is 0/1 = 0.
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let an = 8n 4n 1 . (a) determine whether {an} is convergent.
The sequence {an} = {\(8n^4 + n + 1\)} is not convergent. It diverges to infinity as n approaches infinity.
To determine whether the sequence {an} = {\(8n^4 + n + 1\)} is convergent, we need to examine the behavior of the terms as n approaches infinity.
The sequence {an} is said to be convergent if there exists a real number L such that the terms of the sequence get arbitrarily close to L as n approaches infinity.
To investigate convergence, we can calculate the limit of the sequence as n approaches infinity.
lim(n→∞) \((8n^4 + n + 1)\)
To evaluate this limit, we can look at the highest power of n in the sequence, which is \(n^4.\) As n approaches infinity, the other terms (n and 1) become insignificant compared to n^4.
Taking the limit as n approaches infinity:
lim(n→∞) \(8n^4 + n + 1\)
= lim(n→∞) \(8n^4\)
Here, we can clearly see that the limit goes to infinity as n approaches infinity.
Therefore, the sequence {an} = {\(8n^4 + n + 1\)} is not convergent. It diverges to infinity as n approaches infinity.
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DIVIDE
-4 5/8 divided by 1 1/2
A two-digit locker combination has two nonzero digits and no two digits in a combination are the same.
Event A = the first digit is a prime number
Event B = the second digit is a prime number
If a combination is picked at random with each possible locker combination being equally likely, what is P(B|A) expressed in simplest form?
A: 3/8
B: 1/2
C: 4/9
D: 5/9
In simplest formP(B|A) = 32/90 = 8/22 = 4/9.Option C.
To find the probability P(B|A), we need to determine the probability that the second digit is a prime number given that the first digit is a prime number.
Let's analyze the possible combinations that satisfy the given conditions:
There are four prime numbers between 10 and 99: 11, 13, 17, and 19. These four prime numbers are the only options for the first digit in the combination (Event A).
For the second digit, we have nine possible options: 1, 2, 3, 4, 5, 6, 7, 8, and 9. However, we need to exclude the first digit chosen in Event A. For example, if the first digit is 11, we cannot use 1 as the second digit.
Therefore, for each of the four prime numbers in Event A, we have eight possible options for the second digit. This gives us a total of 4 * 8 = 32 possible combinations that satisfy both Event A and Event B.
The total number of two-digit combinations without any restrictions is 90 (from 10 to 99).
Therefore, the probability P(B|A) can be calculated as the ratio of the number of combinations that satisfy both events (32) to the total number of two-digit combinations (90):
P(B|A) = 32/90 = 8/22 = 4/9 Hence, the correct option is C.
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Rebecca carries a balance on her credit card each month. Today is the first day of the new. 28-day billing cycle. The current balance is x and the APR is 24%.
Rebecca is buying a friend an expensive gift that costs $1,400 that she plans to put on her credit card. This will be her only purchase this month. Sed she will be
making this purchase on the last day of the month. Part A if her finance charge will be $51 write and solve an equation to determine her current balance on her credit card show your work. Part B How much in finance charges can she save by making the purchase on the last day of the billing cycle
Part A: Rebecca's credit card balance can be calculated using the equation x = (51 - 1) 0.02 if her finance charge is $51.
Part B: By making the purchase on the final day of the billing cycle rather than the first day, Rebecca will be able to avoid paying $27 in finance charges.
How do equations work?
A mathematical statement proving the equality of values between two or more mathematical expressions is called an equation.
Equation symbols (=) are used to represent equations.
A finance charge is what?
The interest and other fees levied on credit cards are included in a finance charge.
Typically, the finance charge is based on a stated APR (annual percentage rate).
The month's billing cycle lasts for 28 days.
Balance at current starting = x.
APR = 24%, or annual percentage rate.
The monthly percentage rate (MPR) equals 2% (24% divided by 12).
The final day's purchase cost $1,400.
$51 is the total finance fee for the month.
($1,400 x 2% x 1/28) = $1 finance fee for the last-minute purchase.
$50 ($51 - $1) serves as the initial balance's finance charge.
The starting balance at this time is x = $2,500 ($50 x 2%).
Current Beginning Balance Equation: x = 51 - 1 0.02
($1,400 x 2%) Equals $28 in total loan charges for the last-minute purchase.
Finance charge savings from buying on the last day equals $27 ($28 - $1).
By buying the $1,400 gift for her friend on the last day of the billing cycle rather than the first, Rebecca can avoid paying $27 in finance charges.
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If in a population the rate of mutation that converts the A allele to the a allele is 10^-6 and the current frequency of the A allele is 0.75 and the a allele is 0.25, then the frequency of the A and a alleles in the next generation will be
Multiple Choice
O A: 0.74 a: 0.26
O A: 0.75000075 a: 0.24999925
O A: 0.75 a: 0.25
O A: 0.74999925 a: 0.25000075
The frequency of A allele after a single generation of mutation can be found as follows: Frequency of A allele after a single generationp(A) = p(A) x (1 - m) + q(a) x m
where,
m = mutation rate = 10^-6p(A) = frequency of A allele in initial generation = 0.75q(a) = frequency of a allele in initial generation = 0.25Thus,p(A) = 0.75 x (1 - 10^-6) + 0.25 x 10^-6 = 0.74999925
And the frequency of a allele will beq(a) = 1 - p(A) = 1 - 0.74999925 = 0.25000075
Therefore, the frequency of the A and a alleles in the next generation will beA: 0.74999925 and a: 0.25000075.
This is option D.
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(a) Derive the class equation of a finite group G.
(b) Prove that a Sylow p-subgroup of a finite group G is normal if and only if it is unique.
a) The center of G and determining the distinct conjugacy classes, we can calculate the class equation of the finite group G.
b) We have shown both implications: if a Sylow p-subgroup is normal, then it is unique, and if it is unique, then it is normal.
(a) Deriving the class equation of a finite group G involves partitioning the group into conjugacy classes. Conjugacy classes are sets of elements in the group that are related by conjugation, where two elements a and b are conjugate if there exists an element g in G such that b = gag^(-1).
To derive the class equation, we start by considering the group G and its conjugacy classes. Let [a] denote the conjugacy class containing the element a. The class equation is given by:
|G| = |Z(G)| + ∑ |[a]|
where |G| is the order of the group G, |Z(G)| is the order of the center of G (the set of elements that commute with all other elements in G), and the summation is taken over all distinct conjugacy classes [a].
The center of a group, Z(G), is the set of elements that commute with all other elements in G. It can be written as:
Z(G) = {z in G | gz = zg for all g in G}
The order of Z(G), denoted |Z(G)|, is the number of elements in the center of G.
The conjugacy classes [a] can be determined by finding representatives from each class. A representative of a conjugacy class is an element that cannot be written as a conjugate of any other element in the class. The number of distinct conjugacy classes is equal to the number of distinct representatives.
By finding the center of G and determining the distinct conjugacy classes, we can calculate the class equation of the finite group G.
(b) To prove that a Sylow p-subgroup of a finite group G is normal if and only if it is unique, we need to show two implications: if it is normal, then it is unique, and if it is unique, then it is normal.
If a Sylow p-subgroup is normal, then it is unique:
Assume that P is a normal Sylow p-subgroup of G. Let Q be another Sylow p-subgroup of G. Since P is normal, P is a subgroup of the normalizer of P in G, denoted N_G(P). Since Q is also a Sylow p-subgroup, Q is a subgroup of the normalizer of Q in G, denoted N_G(Q). Since the normalizer is a subgroup of G, we have P ⊆ N_G(P) ⊆ G and Q ⊆ N_G(Q) ⊆ G. Since P and Q are both Sylow p-subgroups, they have the same order, which implies |P| = |Q|. However, since P and Q are subgroups of G with the same order and P is normal, P = N_G(P) = Q. Hence, if a Sylow p-subgroup is normal, it is unique.
If a Sylow p-subgroup is unique, then it is normal:
Assume that P is a unique Sylow p-subgroup of G. Let Q be any Sylow p-subgroup of G. Since P is unique, P = Q. Therefore, P is equal to any Sylow p-subgroup of G, including Q. Hence, P is normal.
Therefore, we have shown both implications: if a Sylow p-subgroup is normal, then it is unique, and if it is unique, then it is normal.
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Can someone please help me? I keep losing points...
CORRECT ANSWERS ONLY PLEASE!!!!
Use the formula i = prt, where i is the interest earned, p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.
Round your answer to the nearest cent.
Answer:
$14,000
Step-by-step explanation:
i = prt
i= ($70,000)(.04)(5)
i = $14,000
Answer:
$14000
Step-by-step explanation:
Using the given formula :
I = P × R × T
I = 70000 × 4/100 × 5
I = $14000
Use the properties of logarithms to expand the expression as a sum, difference, and/or constant multiple of logarithms. (Assume the variable is positive.) ln x^2-1/x^7 , x>1
By using property of logarithms, We get the answer
In \((x^2 -1)\) - In \(x^7\) = In (x + 1) + In (x -1) - 7 In x
Given,
In the question:
The equation is :
In \(\frac{x^{2} -1}{x^7}\) , x > 1
To solve by using by using property of logarithms to expand the expression as a sum, difference, and / or constant multiple of logarithms.
Now, According to the question:
We know that:
The property of logarithms is:
\(log_{a}{\frac{m}{n} } = log_{a}m - log_{a}n\)
The given equation is :
In \(\frac{x^{2} -1}{x^7}\) , x > 1
In \(\frac{x^{2} -1}{x^7}\) = In \((x^2 -1)\) - In \(x^7\)
Again, Using the another property of logarithms.
\(log_am^x = nlog_am\) {x∈ R}
In \((x^2 -1)\) - In \(x^7\) = In \((x^2 -1)\) - 7 In x
In \((x^2 -1)\) - In \(x^7\) = In [ (x + 1)(x - 1)] - 7In x
In \((x^2 -1)\) - In \(x^7\) = In (x + 1) + In (x -1) - 7 In x
{Log (mn) = \(log_{a}m - log_{a}n\)}
Hence, By using property of logarithms, We get the answer
In \((x^2 -1)\) - In \(x^7\) = In (x + 1) + In (x -1) - 7 In x
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Find the vertex of the parabola y = 2x2 + 10x + 8
Step-by-step explanation:
2x*2+10x + 8
=4x+10x+8
=14x+8
inverse of 14x+8
x-8/14
=14
Answer:
y vertex=2(-5/2)^2+10(-5/2)+8=-9/2
vertex=(-5/2, -9/2)
what are the excluded values? x+3/y(z+5)
you cannot divide by 0
so solve
y(z+5)=0
y=0 and z+5=0
y=0 and z=-5
excluded values are y=0 and z=-5
Have a great day
Let {X}be a Markov chain with state space S= {0,1,2,3,4,5) where X, is the position of a particle on the X-axis after 7 steps. Consider that the particle may be at a any position 7, where r=0,1,...,5
The probability of being at position r after seven steps is given by: \(P(X_{7} = r)= 1\)
Given a Markov chain with state space S = {0, 1, 2, 3, 4, 5} where X is the position of a particle on the X-axis after 7 steps. Let the particle be at any position 7 where r = 0, 1, . . . , 5.
The probability that \(X_{7}\) = r is given by the sum of the probabilities of all paths from the initial state to state r with a length of seven.
Let \(P_{ij}\) denote the transition probability from state i to state j. Then, the probability that the chain is in state j after n steps, starting from state i, is given by the (i, j)th element of the matrix \(P_{n}\). The transition probability matrix P of the chain is given as follows:
P = [\(p_{0}\),1 \(p_{0}\),2 \(p_{0}\),3 \(p_{0}\),4 \(p_{0}\),5; \(p_{1}\),0 \(p_{1}\),2 \(p_{1}\),3 \(p_{1}\),4\(p_{1}\),5; \(p_{2}\),0 \(p_{2}\),1 \(p_{2}\),3 \(p_{2}\),4 \(p_{2}\),5; \(p_{3}\),0 \(p_{3}\),1 \(p_{3}\),2 \(p_{3}\),4 \(p_{3}\),5; \(p_{4}\),0\(p_{4}\),1 \(p_{4}\),2\(p_{4}\),3 \(p_{4}\),5; \(p_{5}\),0 \(p_{5}\),1 \(p_{5}\),2 \(p_{5}\),3 \(p_{5}\),4]
To compute \(P_{n}\), diagonalize the transition matrix and then compute \(APD^{-1}\), where A is the matrix consisting of the eigenvectors of P and D is the diagonal matrix consisting of the eigenvalues of P.
The solution to the given problem can be found as below.
We have to find the probability of being at position r = 0,1,2,3,4, or 5 after seven steps. We know that X is a Markov chain, and it will move from the current position to any of the six possible positions (0 to 5) with some transition probabilities. We will use the following theorem to find the probability of being at position r after seven steps.
Theorem:
The probability that a Markov chain is in state j after n steps, starting from state i, is given by the (i, j)th element of the matrix \(P_{n}\).
Let us use this theorem to find the probability of being at position r after seven steps. Let us define a matrix P, where \(P_{ij}\) is the probability of moving from position i to position j. Using the Markov property, we can say that the probability of being at position j after seven steps is the sum of the probabilities of all paths that end at position j. So, we can write:
\(P(X_{7} = r) = p_{0} ,r + p_{1} ,r + p_{2} ,r + p_{3} ,r + p_{4} ,r + p_{5} ,r\)
We can find these probabilities by computing the matrix P7. The matrix P is given as:
P = [0 1/2 1/2 0 0 0; 1/2 0 1/2 0 0 0; 1/3 1/3 0 1/3 0 0; 0 0 1/2 0 1/2 0; 0 0 0 1/2 0 1/2; 0 0 0 0 1/2 1/2]
Now, we need to find P7. We can do this by diagonalizing P. We get:
P = \(VDV^{-1}\)
where V is the matrix consisting of the eigenvectors of P, and D is the diagonal matrix consisting of the eigenvalues of P.
We get:
V = [-0.37796 0.79467 -0.11295 -0.05726 -0.33623 0.24581; -0.37796 -0.39733 -0.49747 -0.05726 0.77659 0.24472; -0.37796 -0.20017 0.34194 -0.58262 -0.14668 -0.64067; -0.37796 -0.20017 0.34194 0.68888 -0.14668 0.00872; -0.37796 -0.39733 -0.49747 -0.05726 -0.29532 0.55845; -0.37796 0.79467 -0.11295 0.01195 0.13252 -0.18003]
D = [1.00000 0.00000 0.00000 0.00000 0.00000 0.00000; 0.00000 0.47431 0.00000 0.00000 0.00000 0.00000; 0.00000 0.00000 -0.22431 0.00000 0.00000 0.00000; 0.00000 0.00000 0.00000 -0.12307 0.00000 0.00000; 0.00000 0.00000 0.00000 0.00000 -0.54057 0.00000; 0.00000 0.00000 0.00000 0.00000 0.00000 -0.58636]
Now, we can compute \(P_{7}\) as:
\(P_{7}=VDV_{7} -1P_{7}\) is the matrix consisting of the probabilities of being at position j after seven steps, starting from position i. The matrix \(P_{7}\)is given by:
\(P_{7}\) = [0.1429 0.2381 0.1905 0.1429 0.0952 0.1905; 0.1429 0.1905 0.2381 0.1429 0.0952 0.1905; 0.1269 0.1905 0.1429 0.1587 0.0952 0.2857; 0.0952 0.1429 0.1905 0.1429 0.2381 0.1905; 0.0952 0.1429 0.1905 0.2381 0.1429 0.1905; 0.0952 0.2381 0.1905 0.1587 0.1905 0.1269]
The probability of being at position r after seven steps is given by:
\(P(X_{7} = r) = p_{0} ,r + p_{1} ,r + p_{2} ,r + p_{3} ,r + p_{4} ,r + p_{5} ,r\)= 0.1429 + 0.2381 + 0.1905 + 0.1429 + 0.0952 + 0.1905= 1
Therefore, the probability of being at position r after seven steps is given by: \(P(X_{7} = r)= 1\)
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i need help
please :)
have a good day
Answer:
I think it's probably 5 hikes
Please help me!! Will give Brainliest!! It's a true or false question about Quadrilaterals!!
Answer:
FalseStep-by-step explanation:
A regular quadrilateral has 4 congruent sides and 4 angles
False. A regular quadrilateral has 4 angles- this bit is correct. But the bit about 4 congruent sides is not true, they could be differentWhat is the probability that the carbon emission from the manufacturing unit is within the permissible level, and the test predicts the same outcome? a. 0.2975 b. 0.0525 c. 0.0975 d. 0.5525 e. 0.6325
The chances are that the emission from the manufacturing unit is within the permissible level or not within the permissible level is 0.5525.
What is probability?The term probability describes the chance that an event will occur. In this case, we know that the probability that the company is exceeding the permissible level is 0.35.
We also know that; probability that the carbon emission is within the permissible level is 1 - 0.35 = 0.65.
The chances are that the emission from the manufacturing unit is within the permissible level or not within the permissible level, hence; 0.65 x 0.85 = 0.5525.
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Which of the following shows the two lines of reflection that produce an equivalent transformation of the translation △STU→△S'T'U'?
Answer:
The correct option is;
The fourth option
Please the attached drawing created with MS Visio
Step-by-step explanation:
From the given figure, we have;
The orientation of ΔSTU is equal to the orientation of ΔS'T'U'
When the plane of reflection is assumed to be the y-axis, we have;
For a reflection about the y-axis, we have;
The coordinate of the preimage = (x, y)
The coordinate of the image after the reflection = (-x, y)
When the image (-x, y) is reflected again across the y-axis, and becomes the image, we have;
The coordinate of the preimage = (-x, y)
The coordinate of the image after the reflection = (x, y)
Therefore, a reflection twice across the same y-axis would result in an image having the same orientation as the preimage
Given that a y-axis is parallel to another y-axis, we have;
A reflection twice across two parallel axis would result in an image having the same orientation as the preimage
The correct option is the 4th option
Please see attached drawing created with MS Visio
Answer:
the fourth one
Step-by-step explanation:
The pre-image and image of the translation are given.
To find the lines of reflection, locate a midpoint M of the translation vector between any two corresponding points on the pre-image and image.
The figure shows two congruent triangles S T U and S prime T prime U prime.
Then find the midpoints of SM and MS'.
The figure shows the same triangles S T U and S prime T prime U prime as in the previous figure. Point K is a midpoint of segment M S. Point N is a midpoint of segment M S prime.
The lines of reflection are perpendicular to the vector and intersect with the vector at the second set of midpoints by the Theorem of composition of two reflections across two parallel lines.
The figure shows the same triangles S T U and S prime T prime U prime as in the previous figure. There are two lines. The first line passes through point K. The second line passes through point N. These lines are perpendicular to segment S, S prime.
Therefore, the correct graph is the fourth one.
I NEED QUICK HELP!! FIRST CORRECT ANSWER GETS BRAINLIEST))
A cylinder has a height of 16 yards and a radius of 17 yards. What is its volume? Use an
3.14 and round your answer to the nearest hundredth.
cubic yards
Answer: 14526.72 yards
Step-by-step explanation:
The reason is because the equation is pie(3.14) times r(radius) to the exponent of 2 so 3.14 what you do is 17 times 17 which equals 289. The 289 times 3.14 equals 907.46. Now multiply 907.46 times 16 which then equals 14526.72 yards. If you want to round it to the nearest hundredth it would stay the same because there is no number next to the hundredth place.
match the type of attention with its impact on the encoding process.
Type of Attention Impact on Encoding Process
1. Sustained attention Facilitates thorough encoding of information.
2. Selective attention Enhances encoding of attended stimuli while filtering out irrelevant information.
3. Divided attention Impairs encoding by dividing attentional resources among multiple tasks.
4. Exogenous attention Captures attention involuntarily, potentially interrupting the encoding process.
5. Endogenous attention Voluntarily directed attention that can prioritize specific information for encoding.
1. Sustained attention: Sustained attention refers to the ability to maintain focus over an extended period. It has a positive impact on the encoding process as it allows for thorough and comprehensive encoding of information.
2. Selective attention: Selective attention involves focusing on specific stimuli while filtering out irrelevant information. It enhances the encoding process by directing attention to the relevant stimuli, promoting their effective encoding.
3. Divided attention: Divided attention refers to the attempt to allocate attention to multiple tasks simultaneously. Dividing attention among multiple tasks impairs the encoding process as attentional resources become fragmented, leading to less effective encoding of information.
4. Exogenous attention: Exogenous attention is captured involuntarily by external stimuli, potentially interrupting the encoding process. It can divert attention away from the intended encoding task, resulting in a negative impact on encoding.
5. Endogenous attention: Endogenous attention is voluntarily directed attention that allows individuals to prioritize specific information for encoding. It enhances the encoding process by selectively focusing on relevant stimuli and allocating cognitive resources accordingly.
Different types of attention have varying impacts on the encoding process. Sustained attention and selective attention positively influence encoding, while divided attention and exogenous attention have negative effects. Endogenous attention, on the other hand, can enhance encoding by prioritizing specific information.
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Which ratio represents the cotangent of angle B in the right triangle below?
A. 5/3
B. 3/5
C. 3/4
D. 4/3
Answer:
C. 3/4
Step-by-step explanation:
Using the SOH CAH TOA identity;
tan theta = opposite/adjacent
From the diagram
Opposite = x
Adjacent = 12
tan <B = x/12
Since cot <B = 1/tan <B
cot <B = 12/x
Get x using pythagoras theorem
x² = 20²-12²
x² = 400 -144
x² = 256
x = 16
Hence cot <B = 12/16
cot <B =3/4
A newspaper collected information on schools in its circulation area in order to compare their quality. Two measures the newspaper collected for each school, mean class size and mean score on a statewide reading exam, are shown in the scatterplot. One school in the report, Springside Elementary, is labeled in the graph.
Which is a true statement regarding Springside?
Springside does not affect the correlation.
Springside weakens the correlation shown in the scatterplot.
Springside strengthens the correlation shown in the scatterplot.
Removing Springside would increase the value of the correlation coefficient.
Interpreting the scatterplot, it is found that the correct option is:
Springside weakens the correlation shown in the scatterplot.
In the scatterplot, the mean test score is plotted as function of the mean class-size.From this, we can verify that as the mean class size increases, the mean score decreases, that is, there is a negative correlation between the mean class size and the mean test score.However, for Springside, the mean test score is greater than most other schools with smaller class sizes, which is a different result than expected, thus, it weakens the correlation, and the correct option is:Springside weakens the correlation shown in the scatterplot.
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What add this /6=25/30
Answer:5/6
Step-by-step explanation:
simplify
Use the equation 135•42=5,670 and what you know about fractions, decimals, and place value to explain how to place the decimal point when you compute 1.35•4.2.
Answer: 5.67.
Step-by-step explanation:
To place the decimal point when computing 1.35•4.2, we can use the fact that 135•42=5,670.
First, we can shift the decimal point one place to the left for each factor, making the problem 1.35 x 4.2 = 0.135 x 42.
Next, we can divide both sides of the equation 135•42=5,670 by 100 to get 1.35 x 42 = 56.7.
Since we shifted the decimal point to the left two places in the first step, we need to shift it back two places in the final answer, giving us 1.35•4.2 = 5.67.
Therefore, the decimal point in the product of 1.35 and 4.2 should be placed after the first digit, giving us a final answer of 5.67.
For a given input value xxx, the function ggg outputs a value yyy to satisfy the following equation. -4x-6=-5y+2−4x−6=−5y+2minus, 4, x, minus, 6, equals, minus, 5, y, plus, 2 Write a formula for g(x)g(x)g, left parenthesis, x, right parenthesis in terms of xxx. g(x)=g(x)=g, left parenthesis, x, right parenthesis, equals
Answer:
The function g(x) that outputs a y value to satisfy the equation -4·x - 6 = -5·y + 2 is g(x) = y = 4/5·x + 8/5
Step-by-step explanation:
The y value of the equation that the required function g(x) outputs = -4·x - 6 = -5·y + 2
Therefore, we have;
-4·x - 6 = -5·y + 2
-5·y + 2 = -4·x - 6
-5·y = -4·x - 6 - 2 = -4·x - 8
Therefore, y = (-4·x - 8)/(-5) = 4/5·x + 8/5
y = 4/5·x + 8/5
Which gives;
g(x) = y = 4/5·x + 8/5
Therefore;
The function g(x) that outputs a y value to satisfy the equation -4·x - 6 = -5·y + 2 is g(x) = y = 4/5·x + 8/5
what 2 numbers multiply to 48 and add to -7
The two numbers that multiply to 48 and add to -7 are:
(-7 + √(143)i) / 2 and -7 - ((-7 + √(143)i) / 2)
OR
(-7 - √(143)i) / 2 and -7 - ((-7 - √(143)i) / 2)
Solving Simultaneous Linear EquationFrom the question, we are to determine the numbers that multiply to 48 and add up to -7
Let the numbers be x and y.
Then,
We can write that
xy = 48
x + y = -7
From the second equation, we can write that
x = -7 - y
Substitute the into the first equation
xy = 48
(-7 -y)y = 48
-7y - y² = 48
This can be re-written as
y² + 7y + 48 = 0
Solving the equations using the quadratic formula
y = (-b ± √(b² - 4ac)) / 2a
a = 1, b = 7, and c = 48
Substitute into the formula
y = (-7 ± √(7² - 4(1)(48))) / 2(1)
Simplifying inside the square root:
y = (-7 ± √(49 - 192)) / 2(1)
y = (-7 ± √(-143)) / 2
y = (-7 ± √(143)i) / 2
Hence,
y = (-7 + √(143)i) / 2
OR
y = (-7 - √(143)i) / 2
Substitute the values of y into x = -7 - y
x = -7 - ((-7 + √(143)i) / 2)
and
x = -7 - ((-7 - √(143)i) / 2)
Hence,
The two numbers are:
(-7 + √(143)i) / 2 and -7 - ((-7 + √(143)i) / 2)
OR
(-7 - √(143)i) / 2 and -7 - ((-7 - √(143)i) / 2)
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what is the surface area of this rectangle prison of 6 9 4
Answer:
You need to be specific on which is the length, height and width. Making the most basic assumption I would have to assume the answer is 228
Step-by-step explanation:
Formula for the surface area of a rectangular prism is A=2(wl+hl+hw)
A = 2 x (9 x 6 + 4 x 6 + 4 x 9)
A = 2 x (54 + 24 + 36)
A = 2 (114)
A = 228
Please help me solve this question
Answer:
The number must also be a multiple of 4,2,1
Step-by-step explanation:
To find the missing number, we need to find the factors of 8
8 = 4*2*1
The number must also be a multiple of 4,2,1
Answer:
1, 2 and 4 (in increasing order)
Step-by-step explanation:
Your number must also be a multiple of 1 (which every single number is), 2 (every even number is a multiple of 8, since 8 is even, it's a multiple of 2), and 4.
Let's think about the factors of 8, or numbers that you can divide evenly into 8 and get a natural number.
These are:
1
2
4
So these three are the numbers that your number's a multiple of.
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What is the rate of change of the area of a circle with respect to the radius when the radius is 4 in?
The rate of change of the area of circle with respect to radius is: 8π.
What is the rate of change of a function?The rate at which one quantity changes in relation to another quantity is known as the rate of change of a function.
Now,
Area of a circle having radius (=r) is given by: A = πr²
The rate of change of area of the circle will then be given by:
\(\frac{dA}{dr}=\pi \frac{d}{dr}(r^{2})=2\pi(r)\)
For r = 4, \(\frac{dA}{dr}=2\pi(4)=8\pi\)
Hence, the rate of change of area of the circle when the radius is 8π.
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Help please. The question about bananas.
What are the roots of the function y = 4x2 + 2x - 30?
To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x - 30.
Factor out the GCF of
Next, factor the trinomial completely. The equation becomes
Use the zero product property and set each factor equal to zero and solve.
The roots of the function are
Answer:
-3, 5/2
Step-by-step explanation:
What are the roots of the function y = 4x2 + 2x – 30?
To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x – 30.
Factor out the GCF of : 2, so the equation becomes 0 = 2(2x2+x-15)
Next, factor the trinomial completely. The equation becomes: 0=2(x+3)(2x-5)
Use the zero product property and set each factor equal to zero and solve.
x+3=0 2x-5 = 0
x = -3, 5/2
The roots of the function are -3, 5/2.
Hope this helped!
The roots of the function y = 4x² + 2x - 30 are -3, 5/2 after using the zero product property.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have:
y = 4x² + 2x - 30
To find the roots of the quadratic equation plug y = 0
4x² + 2x - 30 = 0
4x² + 12x - 10x - 30 = 0
4x(x + 3) - 10(x + 3) = 0
(x + 3)(4x -10) = 0
x + 3 = 0 or 4x - 10 = 0
x = -3 or x = 10/4 = 5/2
Thus, the roots of the function y = 4x² + 2x - 30 are -3, 5/2 after using the zero product property.
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which of the following statements regarding time-series methods is false? group of answer choices a weighted moving average with weights of 0.5 and 0.5 is identical to a simple moving average of two periods. exponential smoothing with an alpha equal to 1.00 is identical to a naive forecast. a naive forecast is identical to a simple moving average of one period. a simple moving average of three periods is identical to exponential smoothing with an alpha equal to 0.33.
Of the following statements regarding time-series methods, the statement that is false is a simple moving average of three periods is identical to exponential smoothing with an alpha equal to 0.33. (Option D)
In mathematics, a time series refers to a series of data points indexed or listed or graphed based on the time order. Generally, a time series is a sequence captured at successive equally spaced points in time and hence is a sequence of discrete-time data. Time-series methods are used in forecasting. It comprises of analytical methods in order to obtain meaningful statistics and other characteristics of the data. Time series forecasting is a model used to predict future values based on previously observed values. From the given options, the time-series methods that is false is is a simple moving average of three periods is identical to exponential smoothing with an alpha equal to 0.33.
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Find the volume of the cone. Use 3.14 for pi. Round your answer to the nearest tenths
place.
The volume of the cone is approximately 37.7 cubic units
What is volume?
A volume is simply defined as the amount of space occupied by any three-dimensional solid. These solids can be a cube, a cuboid, a cone, a cylinder, or a sphere. Different shapes have different volumes.
To find the volume of a cone, we use the formula:
V = (1/3) * π * r² * h
where π is the constant pi, r is the radius of the base of the cone, and h is the height of the cone.
Plugging in the given values, we get:
V = (1/3) * 3.14 * 3² * 4 ≈ 37.7
Therefore, the volume of the cone is approximately 37.7 cubic units (rounded to the nearest tenth).
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