Answer:
the answer is 0.12
Step-by-step explanation:
You would do 15/125 which is 3/25
then you would do 25 times 4 and the 3 times for to get 12/100
then you would convert that into a decimal which is 0.12
The centroid of a region R in the xy-plane is the point {SuperStar[x], SuperStar[y]} where
SuperStar[x] is the average value of f[x,y] = x on R and
SuperStar[y] is the average value of g[x,y] = y on R.
Calculate the centroid of the rectangle R consisting of the points with -3 ≤ x ≤ 3 and -2 ≤ y ≤ 2.
The centroid of the rectangle R is {0,0}. To find the centroid of the rectangle R, we need to calculate the average value of x and y over the region R.
We can start by calculating SuperStar[x]:
SuperStar[x] = (1/Area[R]) * ∫∫[R] x dA
where Area[R] is the area of the region R.
Since R is a rectangle with side lengths of 6 and 4, we have:
Area[R] = 6*4 = 24
We can split up the integral for SuperStar[x] into two integrals:
SuperStar[x] = (1/24) * (∫[-3,3]∫[-2,2] x dy dx)
= (1/24) * (∫[-3,3] x dx * ∫[-2,2] dy)
The integral ∫[-3,3] x dx evaluates to 0 since x is an odd function over the interval [-3,3]. Therefore,
SuperStar[x] = (1/24) * (0 * 4) = 0
Next, let's calculate SuperStar[y]:
SuperStar[y] = (1/Area[R]) * ∫∫[R] y dA
Following the same procedure as before, we get:
SuperStar[y] = (1/24) * (∫[-3,3]∫[-2,2] y dy dx)
= (1/24) * (∫[-3,3] dx * ∫[-2,2] y dy)
The integral ∫[-2,2] y dy evaluates to 0 since y is an odd function over the interval [-2,2]. Therefore,
SuperStar[y] = (1/24) * (6 * 0) = 0
Thus, the centroid of the rectangle R is {0,0}.
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Say, for example, the correlation is 0.75 between fat content (measured in grams) and cholesterol level (measured in milligrams) for 20 different brands of American cheese slices. If cholesterol level were changed to being measured in grams (where 1 gram = 1000 milligrams), what effect would this have on the correlation?
If cholesterol level were changed to being measured in grams instead of milligrams, the correlation between fat content and cholesterol level would not be affected.
This is because correlation is a measure of the strength and direction of the linear relationship between two variables, and converting the units of measurement does not change the underlying relationship between the variables. So, the correlation coefficient of 0.75 would remain the same whether cholesterol level is measured in milligrams or grams.
The correlation between fat content and cholesterol level for the 20 different brands of American cheese slices is 0.75. If you change the measurement of cholesterol level from milligrams to grams (1 gram = 1000 milligrams), it will not affect the correlation. The correlation coefficient will remain 0.75, as it is unit-less and only represents the strength and direction of the relationship between the two variables.
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What is the value of y in the triangle?
The radius of a circle measures 4 ft. What is the circumference of the circle?
Use 3.14 for pi, and do not round your answer. Be sure to include the correct unit in your answer.
Answer:25.12
Step-by-step explanation: the equation is dpi. Diameter x pi. Diameter is 2r. The diameter is 8. 8x3.14=25.12
how do you know where to put the decimal point in problem 6?
6. 4 × 1.18
Answer:
just do 64 * 118 = 7552
count the decimal points in BOTH the items 1 for the 6.4
and 2 in the 1.18 1+2 = 3
so starting from the right move in "3" positions and
put a decimal point
7.552
Step-by-step explanation:
true or false? a proportion is a type of ratio in which the numerator is part of the denominator and can be expressed as a percentage.
True, a proportion is a type of ratio in which the numerator is part of the denominator and can be expressed as a percentage.
A proportion is a mathematical relationship between two numbers, showing that one number is a part of the other or that they share a certain ratio. It compares two ratios and checks if they are equal. For example, if we have two ratios 1:2 and 2:4, these ratios are in proportion because they have the same relationship (1 is half of 2, and 2 is half of 4).
To express a proportion as a percentage, follow these steps:
Convert the ratio to a fraction: In our example, the ratio 1:2 can be converted to the fraction 1/2.
Divide the numerator by the denominator: In this case, we will divide 1 by 2, which equals 0.5.
Multiply the result by 100: Finally, multiply 0.5 by 100 to get the percentage, which is 50%.
So, the statement is true that a proportion is a type of ratio in which the numerator is part of the denominator and can be expressed as a percentage. This concept is essential in various mathematical and real-life applications, such as calculating discounts, tax rates, and percentages of various quantities.
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Anyone have any idea wut the answer is bec I cant figure it out
Answer:
t=d/r
Step-by-step explanation:
d=rt we take r to d
which is t=d/r
please, please help me with this!! it’s very important.
The parabola's vertex is located at (-2, 8). The parabola's graph is then depicted below.
Let a be the leading coefficient and the parabola's vertex be the point (h, k). The parabola's equation will therefore be stated as,
y = a(x - h)² + k
The parabola's equation is stated as,
y = -(x + 2)² + 8
The downward-pointing parabola is represented by the negative sign.
The vertex of the parabola is at (-2, 8), according to the equation above. The parabola's graph is then depicted below.
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I need help with this
1. Since triangle ABC and DEF are congruent, the value of x is -3
2. length AB = 24
length DE = 24
What are congruent triangles?If the three angles and the three sides of a triangle are equal to the corresponding angles and the corresponding sides of another triangle, then both the triangles are said to be congruent.
Since triangle ABC is congruent to triangle DEF , then we can say that line AB is equal to line DE
therefore;
12- 4x = 15-3x
collect like terms
12 -15 = -3x +4x
x = -3
therefore the value of x is -3 and
AB = 12 - 4x
AB = 12 -4( -3)
AB = 12 +12 = 24
DE = 15-3x
= 15-3(-3)
= 15 + 9
= 24
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Which of the following represents a Hardy-Weinberg equation that has been modified to model the effect of natural selection on a population?
a. p2+ q2+ r2+ 2pq + 2pr + 2qr = 1
b. p2+ 2pq + q2= 2
c. (p-3s)2+ 2(p-s)q + q2= 1
d. p4 + 2p2q2 + q4= 1
Option C represents a modified Hardy-Weinberg equation that incorporates the effects of natural selection on a population. The equation is given as:
$(p-3s)^2 + 2(p-s)q + q^2 = 1$
In this equation, various terms are included to express the impact of natural selection. Let's break down the equation and understand its components.
$p$ represents the frequency of the dominant allele in the population, while $q$ represents the frequency of the recessive allele. These frequencies are determined based on the initial allele frequencies in the population.
The term $(p-3s)^2$ represents the expected frequency of the homozygous dominant genotype in the next generation. The factor $3s$ denotes the selection coefficient, where $s$ represents the frequency of homozygous recessive individuals who do not survive due to natural selection. By subtracting $3s$ from $p$, we account for the reduction in the frequency of the dominant allele due to selection.
The term $2(p-s)q$ represents the expected frequency of the heterozygous genotype in the next generation. This term incorporates both the initial frequency of the heterozygous individuals, represented by $(p-s)$, as well as the transmission of alleles through reproduction, given by $q$. The factor of 2 accounts for the two possible combinations of alleles in the heterozygous genotype.
Finally, $q^2$ represents the expected frequency of the homozygous recessive genotype in the next generation. This term considers the transmission of the recessive allele, represented by $q$, and its squared value accounts for the homozygous recessive genotype.
The equation is set equal to 1, as the frequencies of all genotypes should sum to 1 in a population.
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after a large number of drinks, a person has a blood alcohol level of 200 mg/dL. Assume that the amount of alcohol in the blood decays exponentially, and after 2 hours, 128 mg/dL remains. Let Q be the amount remaining after t hours. Find the amount of alcohol in the blood after 4 hours
The amount of alcohol remaining after 4 hours would be approximately 64 mg/dL.
We can use the formula for exponential decay to model the amount of alcohol remaining in the blood after t hours:
\(Q(t) = Q_o* e^{(-kt)\)
where Q₀ is the initial amount of alcohol in the blood, k is the decay constant, and t is the time elapsed.
We know that Q₀ = 200 mg/dL, and Q(2) = 128 mg/dL. We can use this information to solve for k:
\(128 = 200 * e^{(-k*2)\)
\(e^{(2k)} = 200/128\)
2k ≈ ln(1.5625)
k ≈ -0.345
Now we can use this value of k to find Q(4):
\(Q(4) = 200 * e^{(-0.345*4)\)
Q(4) ≈ 64
Therefore, the amount of alcohol is 64 mg/dL.
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• Problem 1. (a). Prove that the empty set 0 is not NP-complete. (b). Prove that if P=NP, then every language A EP, except A = 0 and A= = *, is NP-complete.
To prove that the empty set 0 is not NP-complete, we need to show that 0 is not in NP or that no NP-complete problem can be reduced to 0.
Since 0 is a language that does not contain any strings, it is trivially decidable in constant time. Therefore, 0 is in P but not in NP.
Since no NP-complete problem can be reduced to a problem in P, it follows that 0 is not NP-complete.
(b) To prove that if P=NP, then every language A EP, except A = 0 and A= = *, is NP-complete, we need to show that if P=NP, then every language A EP can be reduced to any NP-complete problem.
Assume P=NP. Let L be an arbitrary language in EP. Since P=NP, there exists a polynomial-time algorithm that decides L. Let A be an NP-complete language. Since A is NP-complete, there exists a polynomial-time reduction from any language in NP to A.
To show that L can be reduced to A, we construct a reduction as follows: given an instance x of L, use the polynomial-time algorithm that decides L to determine whether x is in L. If x is in L, then return a fixed instance y of A. Otherwise, return the empty string.
This reduction takes polynomial time since the algorithm for L runs in polynomial time, and the reduction itself is constant time. Therefore, L is polynomial-time reducible to A.
Since A is NP-complete, any language in NP can be reduced to A. Therefore, if P=NP, then every language in EP can be reduced to any NP-complete problem except 0 and * (which are not in NP).
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we say a square matrix is symmetric provided . let be the vector space of symmetric matrices. what is the dimension of ?
the dimension of the space of symmetric matrices is dependent on the size of the matrix and can be calculated using this formula: n(n+1)/2
A square matrix is considered symmetric if it is equal to its transpose. In other words, if we flip the matrix along its main diagonal, the resulting matrix is identical to the original. The set of all symmetric matrices forms a vector space, denoted as .
To find the dimension of this vector space, we need to determine how many linearly independent matrices are needed to span the space. We can do this by considering the number of variables required to define a symmetric matrix of a certain size.
Let's consider a 2x2 symmetric matrix as an example. We can write it as:
[ a b ]
[ b c ]
where a, b, and c are real numbers. Since the matrix is symmetric, we have the constraint that b = b, which means we only have two independent variables, a and b. Therefore, the dimension of the space of 2x2 symmetric matrices is 2.
Similarly, for a 3x3 symmetric matrix, we can write it as:
[ a b c ]
[ b d e ]
[ c e f ]
where a, b, c, d, e, and f are real numbers. We have the constraints that b = b, c = c, and e = e, which means we only have six independent variables. Therefore, the dimension of the space of 3x3 symmetric matrices is 6.
More generally, the dimension of the space of nxn symmetric matrices can be calculated using the formula:
dimension = 1 + 2 + 3 + ... + n
which simplifies to:
dimension = n(n+1)/2
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Given that
5
x
:
9
=
8
:
3
Calculate the value of
x
.
THE CORRECT ANSWER WILL BE BRAINLIEST
Answer:
x=4.8
Step-by-step explanation:
5x:9 = 8:3
It can also be written as
5x/9 = 8/3
Cross multiply
5x*3 = 8*9
15x = 72
Divide both sides by 15
15x/15 = 72/15
x =4.8
Work out the difference in temperature between 1100 and 1500.
Answer:
400 degrees
Step-by-step explanation:
Difference
1500 - 1100 = 400 degrees difference
Sahara's dog has a mass of 25 kilograms. What is the mass of the dog in grams?
Answer:
25,000g
Step-by-step explanation:
multiply the mass value by 1000
25 x 1000 = 25,000g
) The value of shares, t years after their floatation on the stock market, is modelled by V=10e 0.09t
Find the initial value of these shares and values after 5 years, 10 years and 12 years, respectively. Round your answer to two decimal places. [9 marks] During a recession, a firm's revenue declined continuously so that the total revenue (TR) in t years' time is modelled as TR=10e −0.19t
(in million dollars) Calculate the current revenue and revenue in 5 years' time. After how many years the revenue of this firm is going to drop to $1 million? Round your answer to two decimal places.
After approximately 12.13 years, the revenue of this firm is going to drop to $1 million.
The value of shares t years after their floatation on the stock market, is modelled by V = 10e0.09t
The initial value of shares = V when t = 0. So, putting t = 0 in V = 10e0.09t,
we get
V = 10e0.09 × 0= 10e0 = 10 × 1 = 10 million dollars.
The values after 5 years, 10 years and 12 years, respectively are:
For t = 5, V = 10e0.09 × 5 ≈ 19.65 million dollarsFor t = 10, V = 10e0.09 × 10 ≈ 38.43 million dollarsFor t = 12, V = 10e0.09 × 12 ≈ 47.43 million dollars
The total revenue (TR) in t years' time is modelled as TR = 10e−0.19t (in million dollars)
The current revenue is the total revenue when t = 0.
So, putting t = 0 in TR = 10e−0.19t, we get
TR = 10e−0.19 × 0= 10e0= 10 million dollars
Revenue in 5 years' time is TR when t = 5.
So, putting t = 5 in TR = 10e−0.19t, we get
TR = 10e−0.19 × 5≈ 4.35 million dollars
To find when the revenue of this firm is going to drop to $1 million, we need to solve the equation TR = 1.
Substituting TR = 1 in TR = 10e−0.19t, we get1 = 10e−0.19t⟹ e−0.19t= 0.1
Taking natural logarithm on both sides, we get−0.19t = ln 0.1 = −2.303
Therefore, t = 2.303 ÷ 0.19 ≈ 12.13 years.
So, after approximately 12.13 years, the revenue of this firm is going to drop to $1 million.
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Nine more than the quotient of two and a number xxx. PLEASE HELP ME FAST
Quotient of 2 and x is 2/x
nine more than 2/x is = 9+ (2/x)
so therefore, we have 9 + 2/x
hope this helps :)
Mrs. Greene wants to plant a vegetable garden in her yard. She purchased a package containing 30 sections of fencing, each 1-foot long If she uses all 30 sections to create rectangular space, how many different arrangements are possible? What is the largest area she can enclose for her garden with this fencing?
Answer:
The largest area she can enclose for her garden with this fencing is \(56 ft^2\)
Step-by-step explanation:
Suppose the rectangular space Mrs. Greene wants to plant has dimensions x feet and y feet.
Since each section of fencing is 1-foot long, both x and y must be integer numbers.
The perimeter of the rectangular space is calculated as:
P = 2x + 2y
And we know she uses all 30 sections of fencing, thus:
2x + 2y = 30, where x, y are integers and positive.
Simplifying by 2:
x + y = 15
Solve for x:
x = 15 - y
This equation doesn't have infinitely many solutions, since both numbers must be integers and positive. Suppose we start by setting y=1, then x=14. That is a possible arrangement for the garden.
Another valid option is for y=2, x=13
Continuing with these patterns, we find the maximum value for y is 7, x=8, because if we set y=8, x=7, this is the same condition as y=7, x=8.
Thus, from y=1 to y=7, there are 8 possible combinations for the arrangement of the garden.
The area of a rectangle is
\(A=x\cdot y\)
Testing some possible arrangements:
y=1, x=14
\(A=1\cdot 14= 14 ft^2\)
y=2, x=13
\(A=2\cdot 13= 26 ft^2\)
y=3, x=12
\(A=3\cdot 12= 36 ft^2\)
We can notice the combination y=7, x=8 has an area of:
\(A=7\cdot 8= 56 ft^2\)
This is the largest possible area of all combinations, thus:
The largest area she can enclose for her garden with this fencing is \(56 ft^2\)
what’s the area of the fingure for a brianlist ??!
Answer:
4c^4
Step-by-step explanation:
area of triangle = bh/2
area = 2c^3 * 4c/2
area = 8c^4/2
area = 4c^4
Answer:
4c^4 is your answer hope this helps
Which sample is biased?
Answer: Was there supposed to be a picture?
Step-by-step explanation:
Your neighbor Philip buys a new alarm system that has two alarms (main and backup) with a 0.01 probability of a system failure. After reading the manual, he discovers that the second alarm has a 0.05 probability of failing. What is the probability of the first alarm failing?
Answer:
0.2
Step-by-step explanation:
Let P(A) = probability of first alarm failing and P(B) = probability of second alarm failing = 0.05. Since the events are independent, we have that the probability of both alarms failing or of system failure is P(A ∪ B) = P(A) × P(B).
Since the probability of both alarms failing or of system failure, P(A ∪ B) = 0.01, then the probability of the first alarm failing P(A) = P(A ∪ B)/P(B) = 0.01/0.05 = 0.2.
So, the probability of the first alarm failing P(A) = 0.2
Answer:
0.2 or 20%... see image
Step-by-step explanation:
what operation is this equation below? x-2= -9
addition
subtraction
multiplication
or division
Answer: I believe it would be addition because you are adding 2 to both sides of the equation
Step-by-step explanation:
Answer:
its addition
Step-by-step explanation:
beacuse you have to move constant to the right-hand side and change the sign ---> x=-9+2
and then you have to caculate the ADDITION ( -9+2 = -7)
x= -7
6 is what percent of 28? Round to the nearest tenth if necessary.
1. 21.4%
2. 32.3%
3. 18.6%
4. 26.2%
5. 4.7%
Answer:
the answer is number 1. good luck
State the property that justifies the following statement.
If 7(x-3)=35, then 35=7(x-3).
The property that justifies the following statement, if 7(x-3)=35 then 35=7(x-3) is the symmetric property.
Symmetric property is one of the properties of equality which states that if there is an equality sign (=) between two values or numbers, then the two values will always remain equal even if you change the sides of the values. Therefore if ab = cd, then cd = ab
Hence, according to this property, the left side of the equation can be transferred to the right side and the right side of the equation can be transferred to the left side as the order of the equation can be ignored.
The symmetric property also justifies that if the values on the two sides are not equal, then they will remain unequal even if the sides are changed. That is if ab ≠ cd, then cd ≠ ab.
So, according to the symmetric property, the statement, if 7(x-3)=35 then 35=7(x-3) is valid.
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4. -/1 points Scalc8 16.2.002. Evaluate the line integral, where C is the given curve. |(x/Y) ds, C: x= x, y = t4, 15t54 Need Help? Read It Talk to a Tutor Submit Answer
So the value of the line integral given point scale is \(\frac{15}{16}\) -4cos6-6 .
To evaluate the line integral X signed by ideas oversee. Where C is the line segment from 2 to 36
First we find the vector determined by the two points
So ,
36 -2 = 34
Starting point is 2.
The segment can be para militarized as vitally equal to 2+3T+40 =3T 2+40 .
They belonging to close interval 0- one. Next we find the derivative of the Para militarism action y¹T= 34.
This implies the strength of y¹T = \(\sqrt{3^{2}+4^{2} }\)
= 5
Finally we calculate the integral X signed by ideas oversee which is equal to treaty sign 2+ 40×DT Over 0- one.
Now report 2+ 40 equal to you. So implies 4DT is equal to DU and when T is equal to zero.
20=U
So next this integral becomes 15×2 to 6 Juju -2 x 4.
Comes out to be 15 x 16. 0-2. Sign your deal. Now applying integration by parts.
We have 15 x 16. 0-2 cause you plus integration of causal deal Limit 2- 6.
Now we have 15/16. On applying the limits -4 cos six plus sign 6- sign too.
So therefore final answer becomes \(\frac{15}{16}\) -4cos6-6 .
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Determine the frequency of each class in the table shown. Number of Candles in a Glass Jar Class Frequency 1003 1062 1063 1122 1123 1182 1183 1242 1243 1302 1303 1362
The frequency of a class is the number of data points that fall within the class is 1.
To determine the frequency of each class in the table shown, we must first divide the data points into the respective classes. The classes are 1003, 1062, 1063, 1122, 1123, 1182, 1183, 1242, 1243, 1302, 1303, and 1362.
For the class 1003, the frequency is 1, since there is only one data point (1003) in this class.
For the class 1062, the frequency is also 1 since there is only one data point (1062) in this class.
For the class 1063, the frequency is also 1 since there is only one data point (1063) in this class.
For the class 1122, the frequency is 1 since there is only one data point (1122) in this class.
For the class 1123, the frequency is 1 since there is only one data point (1123) in this class.
For the class 1182, the frequency is 1 since there is only one data point (1182) in this class.
For the class 1183, the frequency is 1 since there is only one data point (1183) in this class.
For the class 1242, the frequency is 1 since there is only one data point (1242) in this class.
For the class 1243, the frequency is 1 since there is only one data point (1243) in this class.
For the class 1302, the frequency is 1 since there is only one data point (1302) in this class.
For the class 1303, the frequency is 1 since there is only one data point (1303) in this class.
For the class 1362, the frequency is 1 since there is only one data point (1362) in this class.
Therefore, the frequency of each class in the table shown is 1.
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Please help on 5 and 6
geometry help greatly needed, check photo for more information! <3
Answer:
\(\huge\boxed{\sf x = 55\°}\)
Step-by-step explanation:
When a quadrilateral is inscribed in a circle, the opposite angles of it add up to 180 degrees.
Here,
∠DCB + ∠DAB = 180 (Opposite angles of a quad inscribed in a circle.)
Given that: ∠DCB = 135° and ∠DAB = x
135 + x = 180
Subtract 135 to both sides
x = 180 - 135
x = 55°
\(\rule[225]{225}{2}\)
Hope this helped!
~AH1807is there another data point that would be reasonable to add, even though you made no measurements? if so, what is it?is there another data point that would be reasonable to add, even though you made no measurements? if so, what is it? (2m/s2,3n) (5m/s2,5n) (0m/s2,0n) none of the aboverequest
It is possible to add another data point that would be reasonable, even though no measurements were made. This data point could be an estimate or a prediction based on the existing data points. For example, if the existing data points show a linear relationship between acceleration and force, it would be reasonable to add a data point that falls along the same line.
One possible data point that could be added is (3m/s2, 4n). This data point falls between the existing data points (2m/s2, 3n) and (5m/s2, 5n), and would be a reasonable estimate based on the existing data.
Another possible data point that could be added is (7m/s2, 6n). This data point falls along the same line as the existing data points, and would be a reasonable prediction based on the existing data.
Overall, it is possible to add another data point that would be reasonable, even though no measurements were made, as long as the data point is based on the existing data and follows the same pattern or relationship.
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