Answer:
tan c would be 20/21, and that can't be further simplified. tan is opposite/adjacent, so that's why it's 20/21.
What is the y-intercept of -x + 4 = y? *
Answer:
y intercept: (0,4)
Step-by-step explanation:
How do the expressions 8+k2−6 and 8(k+2)−4k compare when k = 7?
Drag a symbol into the box to correctly complete the statement.
8+k2−6 Response area 8(k+2)−4k when k = 7.
A. =
B. >
C.
Answer:
8+k2-6>8(k+2)-4k
Step-by-step explanation:
8+7×2-6 and 8(7+2)-4×7
8+14-16 and (56+16)-28
6 and 44
You invest $1000 in each of two accounts. Account A earns simple interest at a rate of 2.42% over four years. Account B earns simple interest at a rate of 2.42% over 24 months. Find the interest earned by the 2 accounts. HELP PLEASE
Answer:
Acct A $96.80
Acct B $48.40
Step-by-step explanation:
I = PRT
Acct A I = 1000(.0242)(4)
= $96.80
Acct B I = 1000(.0242)2)
= $48.40
Please help me to solve this problem of ordered pairs. The value of x and y should be find.
Answer:
x=y=-2
Step-by-step explanation:
Comparing these ordered pairs, we will get
4^(1/x)=1/2 and 9^(1/y)=1/3
x=-2 and y=-2
Answer:
x = y = - 2
Step-by-step explanation:
Using the rule of radicals/ exponents
\(a^{\frac{m}{n} }\) = \(\sqrt[n]{a^{m} }\) , \(a^{-m}\) = \(\frac{1}{a^{m} }\) , \((a^m)^{n}\) = \(a^{mn}\)
Given
\(\sqrt[x]{4}\) = \(\frac{1}{2}\) , then
\(\sqrt[x]{2^{2} }\) = \(\frac{1}{2}\)
\(2^{\frac{2}{x} }\) = \(2^{-1}\)
Since the bases on both sides are equal, both 2 , then equate exponents
\(\frac{2}{x}\) = - 1 ( multiply both sides by x )
2 = - x , that is
x = - 2
Similarly
\(\sqrt[y]{9}\) = \(\frac{1}{3}\) , then
\(\sqrt[y]{3^{2} }\) = \(\frac{1}{3}\)
\(3^{\frac{2}{y} }\) = \(3^{-1}\)
Equating the exponents gives
\(\frac{2}{y}\) = - 1 ⇒ - y = 2 ⇒ y = - 2
Let p and q be positive numbers. Prove that ∫ 0
1
(1−x p
) 1/q
dx=∫ 0
1
(1−x q
) 1/p
dx
We can write\(:∫0¹(1-x^q)^1/pdx = ∫1⁰(1-v)^1/pv^(1/q - 1) dv.\)
To prove that \(∫0¹(1-x^p)^1/qdx=∫0¹(1-x^q)^1/pdx,\) we use the substitution u = x^p and u = x^q respectively.
Using the substitution method, we have the following: Let\(u = x^p,\) then \(du/dx = px^(p-1)\)and \(dx = (1/p)u^(1/p - 1) du.\)
Hence we can write\(:∫0¹(1-x^p)^1/qdx = ∫0¹(1-u)^1/qu^(1/p - 1) duLet v = (1 - u), then dv/dx = -du and dx = -dv.\)
Therefore, we can write:\(∫0¹(1-u)^1/qu^(1/p - 1) du = ∫1⁰(1-v)^1/qv^(1/p - 1) dvS\)
Since p and q are both positive, 1/p and 1/q are positive, which implies that the integrals are convergent. Now let us apply the same technique to the other integral. I\(f v = x^q, then dv/dx = qx^(q-1) and dx = (1/q)v^(1/q - 1) dv.\)
Hence we can write:∫\(0¹(1-x^q)^1/pdx = ∫1⁰(1-v)^1/pv^(1/q - 1) dv.\)
Using the identity\((1 - u)^1/q = (1 - u^q)^(1/p),\)
we can write:\(∫0¹(1-x^p)^1/qdx = ∫0¹(1 - (x^p)^q)^(1/p)dx = ∫0¹(1 - x^q)^(1/p)dx∫0¹(1-x^q)^1/pdx = ∫0¹(1 - (x^q)^p)^(1/q)dx = ∫0¹(1 - x^p)^(1/q)dx.\)
Hence, we have shown that \(∫0¹(1-x^p)^1/qdx = ∫0¹(1 - x^q)^(1/p)dx.\)
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3. Consider the following differential equations: dy/dt = y^3 (y - 1)
dy/dt = y^2 - 5x + 6
Analyze the differential equations using the qualitative-graphical approach: (a) Draw the phase line. (b) Identify the stationary point/s. (c) Analyze the dynamic stability of the stationary points.
The first differential equation has two stationary points, y = 0 and y = 1, with y = 0 being stable and y = 1 being unstable. The second differential equation has no stationary points, and therefore, no equilibrium points to analyze.
To draw the phase line for the first differential equation dy/dt = y^3(y - 1), we can locate the critical points by setting dy/dt = 0. This gives us two stationary points: y = 0 and y = 1. We can now analyze the dynamic stability of these points. For y = 0, we observe that when y < 0, dy/dt < 0, indicating that y = 0 is a stable equilibrium point. When y > 0, dy/dt > 0, indicating that y = 0 is an unstable equilibrium point. For y = 1, we find that dy/dt < 0 when y < 1 and dy/dt > 0 when y > 1, meaning that y = 1 is an unstable equilibrium point.
Moving to the second differential equation dy/dt = y^2 - 5x + 6, we notice that it is not in the standard form for a phase line analysis. We need to express it as dy/dt = f(y), where f(y) is a function of y only. By rearranging the equation, we have dy/dt = y^2 - 5x + 6 = y^2 + 6 - 5x. Since the term -5x is not a function of y, it does not affect the analysis of the equilibrium points. Thus, we can focus on the function f(y) = y^2 + 6. In this case, there are no stationary points since f(y) = y^2 + 6 is always positive. Hence, there are no equilibrium points to analyze for this differential equation.
In summary, the first differential equation has two stationary points, y = 0 and y = 1, with y = 0 being stable and y = 1 being unstable. The second differential equation has no stationary points, and therefore, no equilibrium points to analyze.
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A cab service charges $4 plus $1.50 per mile. Kate wants to spend no more
than $28 on cab fare. In this inequality, m represents the greatest number of
miles Kate can travel in the cab.
28 > 4+1.5m
Solve the inequality. What is the value of m?
O A. 8
O B. 16
O C. 28
O D. 30
Answer:
b
Step-by-step explanation:
took the test i got bj : fz wf
The value of m in the inequality 28 > 4+1.5m is 16
What is Inequality?A relationship between two expressions or values that are not equal to each other is called 'inequality.
To solve for m, we need to isolate it on one side of the inequality.
We can start by subtracting 4 from both sides:
28 - 4 > 1.5m
Simplifying:
24 > 1.5m
Next, we can divide both sides by 1.5:
16 > m
So Kate can travel at most 16 miles in the cab if she wants to spend no more than $28 on cab fare.
Therefore, the value of m in the inequality 28 > 4+1.5m is 16
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help me please…………………
Answer:
look at the photo.............
a researcher computes a 2 × 3 factorial anova. in this example, how many interactions can be observed?
a.1
b. 2
c.3
d.6
There are six possible interactions in a 2 × 3 factorial ANOVA. The correct option is (d) 6.
In a 2 × 3 factorial ANOVA, there are two factors, each with two levels and three levels, respectively. The number of interactions that can be observed in a factorial ANOVA is determined by the product of the number of levels of each factor.
In this case, the first factor has two levels, and the second factor has three levels.
Therefore, the number of possible interactions is given by multiplying the number of levels of the first factor by the number of levels of the second factor: 2 × 3 = 6.
Each interaction represents a unique combination of the levels of the two factors.
For example, one interaction might represent the effect of the first factor at the first level interacting with the second factor at the first level, while another interaction might represent the effect of the first factor at the second level interacting with the second factor at the third level, and so on.
Therefore, the correct answer is d. 6, as there are six possible interactions in a 2 × 3 factorial ANOVA.
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A big family on a vacation budgets $7915 for sit-down restaurant meals and fast food. The family can buy 4 restaurant meals if they don't buy any fast food. What is the price of a restaurant meal for the family?
The price of a restaurant meal for the family is $1,978.75.
let's assume the price of a restaurant meal is x dollars.
if the family buys 4 restaurant meals, the total cost would be 4x dollars.
we are given that the family has a budget of $7,915 for sit-down restaurant meals and fast food. this means that the total cost of the meals (including both restaurant meals and fast food) is $7,915.
if the family chooses to spend the entire budget on restaurant meals, without buying any fast food, the cost would be 4x dollars.
so, we can set up the equation:
4x = 7,915
apologies for the brief response. here's a more detailed explanation:
let's assume the price of a restaurant meal for the family is x dollars.
if the family buys 4 restaurant meals, the total cost would be 4 times the price of a restaurant meal, which is 4x dollars.
we are given that the family has a budget of $7,915 for sit-down restaurant meals and fast food.
if the family decides not to buy any fast food and spends the entire budget on restaurant meals, the total cost of the meals would be $7,915.
so, we can set up the equation:
4x = 7,915
to find the price of a restaurant meal (x), we need to solve this equation.
dividing both sides of the equation by 4, we get:
x = 7,915 / 4
x = 1,978.75 75.
this means that if the family decides to buy 4 restaurant meals without purchasing any fast food, each meal would cost $1,978.75.
to find the price of a restaurant meal (x), we divide both sides of the equation by 4:
x = 7,915 / 4
x = 1,978.75
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What is the range of an exponential parent function with base 2?
A. Nonnegative real numbers (y20)
B. Positive real numbers (y > 0)
C. All real numbers
D. Negative real numbers (y< 0)
Answer:
I think it's c all real number
Answer:
B. Positive real numbers (y > 0)
Step-by-step explanation:
Just took the quiz
3. Ying Yu turned 22 this year. In 8 years, she will be three times as old as her little brother will be then. How old is her little brother now? Answer
Answer:
He is 2 years old.
Step-by-step explanation:
She is 22, in 8 years she will be 30. 30 is 3×10. At that time, her brother will be 10; that is 8 years from now. So now, the little brother is 10-8 = 2 years old.
If you must show algebra work:
x = brother's age now.
x+8=brother's age in 8 years.
YingYu's age in 8 years = 3 × brother's age in 8 years
22+8 = 3(x+8)
30 = 3x +24
6 = 3x
2 = x
What is the value of X?
3
4
6
8
Answer:
The answer is 4
Step-by-step explanation:
3xyy' = 3y2 + 4x
sqrt(x2+y2)
For x, y>0, a general solution is ____?
the general solution is; y = x²/4 + c1√(x²+y²)y = - x²/4 + c2√(x²+y²) where c1 and c2 are constants. Thus, a general solution is;y = x²/4 ± c√(x²+y²) where c = √(c1² + c2²)
Given equation is 3xyy' = 3y² + 4x√(x²+y²)
For x, y>0The given differential equation is a first-order homogeneous differential equation.
To solve the differential equation we need to substitute y= vxThen y' = v + x v'
By substituting these values in the given equation,
we have;
3xvx(v+xv') = 3v²x + 4x√(x² + v²x²)3v(v+xv')
= 3v² + 4√(x² + v²x²)
⇒ 3v^2 + 3vxv' = 3v² + 4√(x² + v²x²) - 3v(v+xv')
⇒ 3vxv' + 3v² - 3vxv' = 4√(x² + v²x²) - 3v²
⇒ 3v² = 4√(x² + v²x²) - 3v²
⇒ 6v² = 4√(x² + v²x²)⇒ 9v⁴ = 16x²v² + 16x²v⁴
⇒ 9v⁴ - 16x²v² - 16x²v⁴ = 0
⇒ 9v⁴ - 16x²v² = 0 (1 - 16v²/x²) = 0⇒ 1 - 16v²/x² = 0
⇒ 16v² = x²⇒ v² = x²/16
For v = x/4, y = vx = x²/4 and y' = v + x v' = x/4 + x/4 v' = y/4x + √(x²+y²)For v = - x/4, y = vx = - x²/4 and
y' = v + x v' = - x/4 + x/4 v' = y/4x - √(x²+y²)
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If you help ill mark as brilliant.
Answer:
B, or -75
Step-by-step explanation:
f(x) is a function of x.
If f(x) = 50 when x = -10, you can rearrange this information.
f(-10) = 50
f = -5
If f = -5...
-5 ( 15) = -75
Complete the remainder of the
table
Answer:
Step-by-step explanation:
x = 4
=> y = 3
x = 8
=> y = -2
x = 12
=> y = -5
Use intercepts to graph the linear equation −12x+3y=24.
Answer: slope is 4, y intercept is ( 0,8) , x intercept is (-2,0)
Step-by-step explanation: graph the line using the slope and and y intercept.
Someone please please help
Answer:
The amount of apples is the Xs and The cost is the Ys
Step-by-step explanation:
(L5) Theorem 5.5B states that if the measure of one angle of a triangle is greater than the measure of another angle, then the side __________ he angle with the greater measure will be longer than the side opposite the angle with the __________ measure.
Theorem 5.5B is a helpful theorem that relates the measures of angles in a triangle to the lengths of the sides opposite those angles. Specifically, it states that if one angle in a triangle has a greater measure than another angle, then the side opposite the angle with the greater measure will be longer than the side opposite the angle with the smaller measure.
This theorem can be useful in a variety of situations, such as when solving for unknown side lengths or angles in a triangle.
To understand why this theorem works, it can be helpful to think about the relationship between the measures of angles and the lengths of sides in a triangle. For example, we know that in any triangle, the sum of the measures of the three angles is always 180 degrees. We also know that the length of one side of a triangle is related to the measures of the angles opposite that side, according to the Law of Sines or the Law of Cosines.
Using these relationships, we can see why Theorem 5.5B makes sense. If one angle in a triangle is larger than another angle, then the remaining angle must be smaller to ensure that the sum of the angles adds up to 180 degrees. This means that the side opposite the larger angle must be longer than the side opposite the smaller angle, since the length of a side is related to the measure of the angle opposite that side.
In summary, Theorem 5.5B provides a helpful way to relate the measures of angles and the lengths of sides in a triangle. By understanding this theorem, we can solve problems involving unknown side lengths or angles with greater ease and accuracy.
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A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is 0.10. a. What is the probability the salesperson will make exactly two sales in a day? b. What is the probability the salesperson will make at least two sales in a day? c. What is the expected number of sales per day?
The probability that the salesperson will make exactly two sales in a day is 0.1489, the probability that the salesperson will make at least two sales in a day is 0.1451, and the expected number of sales per day is 0.8.
Let X be the number of sales made per day by the salesperson.
Then X follows a binomial distribution with parameters n = 8 and p = 0.10.a. To find the probability that the salesperson will make exactly two sales in a day, we need to find P(X = 2).
P(X = 2) = nCx * p^x * q^(n-x) = 8C2 * (0.10)^2 * (0.90)^6 = 28 * 0.01 * 0.5314 = 0.1489
Therefore, the probability that the salesperson will make exactly two sales in a day is 0.1489.
b. To find the probability that the salesperson will make at least two sales in a day, we need to find P(X ≥ 2).
P(X ≥ 2) = 1 - P(X < 2) = 1 - [P(X = 0) + P(X = 1)] = 1 - [(8C0 * (0.10)^0 * (0.90)^8) + (8C1 * (0.10)^1 * (0.90)^7)] = 1 - [1 * 0.90^8 + 8 * 0.10 * 0.90^7] = 0.1451
Therefore, the probability that the salesperson will make at least two sales in a day is 0.1451.
c. Expected number of sales per day = E(X) = n * p = 8 * 0.10 = 0.8
Therefore, the expected number of sales per day is 0.8.
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Aven wants to buy a car in 4 years and needs a down payment of $2500. If she deposits $2000
now, with interest compounded continuously, what interest rate will she need to get her down
payment in time?
She needs to get her interest rate at will 5.592 %/year.
What is Compound interest?
Compound interest is the addition of interest to the principal sum of a loan or deposit or interest on interest plus interest.
\(A = P(1 + \frac{r}{n})^{nt}\)
Where,
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest is applied per time period
t = number of time periods elapsed
Solving for rate r as a decimal
r = n[(A/P)1/nt - 1]
r = 12 × [(2,500.00/2,000.00)1/(12)(4) - 1]
r = 0.0559158
Then convert r to R as a percentage
R = r * 100
R = 0.0559158 * 100
R = 5.592%/year
Hence, she needs to get her interest rate at will 5.592 %/year.
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A student is overheard saying: "I don't need to learn the Primary Trig Ratios. I am just going to use the Sine
and Cosine Laws to solve problems." Show by example that the student is right. Explain the advantages and
disadvantages to this approach. Step by step. Thank you!
The sine and cosine rule is typically used to find the measure of angles in trigonometry.
How to illustrate the trigonometry?It should be noted that the sine rule is used when we are given:
two angles and one side.two sides and a non included angle.The cosine rule is used when we are given:
there sides two sides and the included angle.The advantage is that it can help us understand the connections between the sides and their angles.
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what is the common denominator of 3/5, 4/9, 6/7?
Answer: hi! for the denominators (5, 9, 7) the least common multiple
Step-by-step explanation:
(LCM) is 315.
LCM(5, 9, 7)
Therefore, the least common denominator (LCD) is 315.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
3/5 = 3/5 × 63/63 = 189/315
4/9 = 4/9 × 35/35 = 140/315
6/7 = 6/7 × 45/45 = 270/315
2-quart carton of ice cream costs $6.92. What is the price per pint?
Answer:
$1.73 per pint
Step-by-step explanation:
2 quarts is the equivalent of 4 pints. Therefore, in order to get the price per pint you must divide 6.92 by 4. This gives you $1.73 per pint.
find area of shaded region by using formula a^2-b^2.
Answer:
216 cm^2
Step-by-step explanation:
15^2 -3^2 = 225 -9
= 216
What are the steps for using a compass and straight edge to construct a square
Assume tuition at Penn State cost $6,142 (per semester) in 2007 and $7,562 in 2012. If the price index was 207.34 in 2007 and 226 in 2012, then we could say:
Based on the given information, we can conclude that tuition at Penn State has increased more rapidly than inflation.
The price index measures the average change in prices of a basket of goods and services over time. In this case, the price index increased from 207.34 in 2007 to 226 in 2012, indicating an overall inflation rate of approximately 9% over that period. On the other hand, tuition at Penn State increased from $6,142 to $7,562, representing an increase of approximately 23%.
When comparing the rates of increase, we can see that tuition has outpaced inflation. This implies that the cost of education at Penn State has been rising more rapidly than the general increase in prices for goods and services. It suggests that factors specific to the education industry, such as rising costs of resources, facilities, and personnel, have contributed to the higher tuition rates.
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The complete question is:
Assume tuition at Penn State cost $6,142 (per semester) in 2007 and $7,562 in 2012. If the price index was 207.34 in 2007 and 226 in 2012, then we could say:
has increased more slowly than inflation.suffers from menu costs due to inflation,has increased more rapidly than inflation.has increased at about the same rate as inflation.is an inferior good.Diane wants to calculate the median in a set of scores, but there are two middle numbers. How should she determine the value of the median
By taking the average of the two middle numbers, Diane ensures that the median represents the central tendency of the dataset when there are an even number of values.
When there are two middle numbers in a set of scores, Diane can determine the value of the median by taking the average of the two middle numbers.
To find the median, Diane should follow these steps:
1. Arrange the scores in ascending order.
2. Identify the two middle numbers. If there is an even number of scores, there will be two middle numbers.
3. Take the average of the two middle numbers to determine the median value.
For example, let's say Diane has the following set of scores: 82, 75, 90, 86, 79, 88. To find the median, she would follow these steps:
1. Arrange the scores in ascending order: 75, 79, 82, 86, 88, 90.
2. Identify the two middle numbers: 82 and 86.
3. Take the average of the two middle numbers: (82 + 86) / 2 = 84.
Therefore, in this case, the median of the set of scores is 84.
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Can I please get help ..?
Sandstone Middle School installed new lockers over the summer. The lockers are shaped like rectangular prisms. Each one has a volume of 7 and one over two
cubic feet and is 1 foot deep and 6 feet tall.
Which equation can you use to find the width of each locker, w?
What is the width of each locker?
Write your answer as a whole number, proper fraction, or mixed number.
The width of each locker is 1 1/4 foot.
We have,
Length = 1 foot
Volume = 7 1/2 cubic feet
Height = 6 foot
So, Volume of Prism = l w h
7 1/2 = (1) w (6)
15/2 = 6w
w= 15/(2 x 6)
w = 5/4
w= 1 1/4 foot
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