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A parabola opening up or down has vertex (0,0) and passes through (-20, 20). Write its
equation in vertex form.

Answer:

D. Adjusted balance method

Step-by-step explanation:

Answer:

y-axis

Step-by-step explanation:

points are (x,y)

since the y-coordinate does not change, but the x-coordinate does, it rotates around the y-axis.

reflection just means it rotates 180 degrees (out of the paper, not around)

Answer:

5 m/min

Step-by-step explanation:

Initial speed = 6 m/ min

Final speedd = 4 m/ min

\(Average\:speed\:=\:\dfrac{total\:speed}{2}\)

Average speed = \(\dfrac{ 6 + 4}{2}\)

Avg. Speed = 5 m / min.

Answer:

4 : 2 = 10 : 5.

Step-by-step explanation:

Let's put this in a fraction way. 4/2 = 2, and 10/5 = 2. Likewise, we can keep going and putting things that equal to 2. (e.g. 42 : 21)

The child advocate collects data by randomly selecting 4 out of the 25 state orphanages. In each of the four selected orphanages, the child advocate surveys every child.

This approach allows the child advocate to obtain information from a representative sample of children in state orphanages. By surveying every child in the selected orphanages, the child advocate ensures that no child is excluded from the data collection process. This method provides a comprehensive understanding of the experiences, needs, and concerns of the children in the four chosen orphanages.

By collecting data in this manner, the child advocate can gather valuable insights that can inform policies and interventions to improve the well-being and support for children in state orphanages.

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The optimizing function of the printed area is  while dimensions that maximize the printed area is 80 by 12 cm

Assume the dimensions of the poster be w and h, where:

w represents the width.

h represents the height.

So, the area of the poster is:

a= hw

The area is given as 960.

So, we have:

hw = 960

w = 960/h

When the height is reduced by 10 cm and the width by 6 cm.

The printed area (P) becomes

p =(w-12)(h-20)

p =(960/h-12)(h-20)

p = (960-12h/h)(h-20)

p =960h - 19200-12h²+240h

p = -12h²+1200h-19200

p = 80,20

w = 960/h

w = 960/80 = 12

Consequently, 80 by 12 cm are the dimensions that maximize the printed area.

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Answer:

57%

Step-by-step explanation:

Answer:

I think the first one 57%

Step-by-step explanation:

hope this helps sorry if it doesn't have a good rest of your afternoon/day :) ❤

The true statement is,

⇒ The joint frequencies is that twenty-three 9th graders and fifteen 11th graders prefer math.

Now, Based on the given table, the statement that is true about the joint frequencies is that twenty-three 9th graders and fifteen 11th graders prefer math.

Since, The given table shows that in the first column, under the ninth grade row, there are 18 students who prefer math and in the third column, under the 11th grade row, there are 15 students who prefer science.

Hence, There are no joint frequencies given that add up to 23, so the only true statement among the options is the first one.

Thus, The true statement is,

⇒ The joint frequencies is that twenty-three 9th graders and fifteen 11th graders prefer math.

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Answer answer is b dont trust the otha dude

Step-by-step explanation:

Answer:

Step-by-step explanation:

Givens

Take any two points (9,33) and (5,17)

Use the slope formula to determine what the slope might be

m = (y2 - y1)/(x2 - x1)

y2 = 33

y1 = 17

x2 = 9

x1 = 5

Solution

m = (33 -17) / (9 - 5)

m = 16/4

m = 4

Extra

Use 5,17 to get the y intercept

x = 5

y = 17

y = 4x + b

x = 5

y = 17

Use the general equation for a line: y = 4x + b and solve for b

17 = 4*5 + b

17 = 20 + b

b = - 3

So the line equation is y = 4x - 3

I did this extra work because I did not believe that 1,1 could be a solution for this equation given the other numbers. Turns out I was wrong. y = 4x - 3 has all 4 points on the line.

Answer:

1/2 for the whole pineapple

1/4 for the half pineapple

Step-by-step explanation:

An all-night study session can help you catch up on school assignments. The only way to become a straight-A student is efficient study habits.

Most students pseudo-work and end up wasting valuable time.

The correct option is (C)

This is based on an article about pseudo-working which is something that students do where they read for long hours and appear very serious in reading when in fact they do not focus on the reading and therefore end up not grasping much.

The author was trying to express that most students do this and that it is simply a waste of time which could have been spent actually studying.

The correct option is (C).

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The given question is incomplete, complete question is:

What central idea about studying does the author express in Passage 1?

A Straight-A students know how to work harder than other students.

B The only way to become a straight-A student is efficient study habits.

C Most students pseudo-work and end up wasting valuable time.

D An all-night study session can help you catch up on school assignments.

Answer:

the second

Step-by-step explanation:

refers to well-founded standards of right and wrong that prescribe what humans should do, usually in terms of rights, obligations, benefits to society, justice

Answer:

see explanation

Step-by-step explanation:

let n and n + 2 be 2 consecutive even numbers, then their difference of their squares is

(n + 2)² - n² ← expand factor using FOIL

= n² + 4n + 4 - n² ← collect like terms

= 4n + 4 ← factor out 4 from each term

= 4(n + 1)

Since n and n + 2 are even then n + 1 is odd

So it is always an odd number multiplied by 4

Answer:

I think its 12 not sure though because were 12 is it's a perfect triangle meaning the angles are the same

Responses interval : (-1, -32) for the absolute minimum; (0, 0) for the relative maximum; (2, -32) for the absolute minimum; (+, +) for the absolute maximum (or "no absolute maximum")

Detailed explanation:

Extremes will occur at the domain interval's ends and at turns when the first derivative is zero.

It is the derivative.

h'(t) = 24t^2 -48t = 24t (t -2)

The extremes will be at t=0 and t=2, when there are zeros.

By evaluating the function at the endpoints of the interval and at the turning points, we can identify relative and absolute extrema.

h(-1) = 8(-1) (-1)

²(-1-3) = -32\s h(0) = 8(0)(0-3) = 0\s h(2) = 8(2²)(2 -3) = -32\s h(∞) = 8(∞)

³ = ∞

At t=-1 and t=2, the absolute minimum is found to be -32. The greatest value is, which is located at time t. At t=0, the relative maximum is zero, or 0.

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Answer:

10−(9)(−6)

=10−(−54)

=64

hope i helped

Answer:

66,5 sm

Step-by-step explanation:

The sides of a triangle: 2x+7x+3x=114

12x=114

x=9,5

2×9,5=19,

7×9,5=66,5

3×9,5=28,5

Answer: 66,5

Step-by-step explanation:

125+680w>2,500+450w

Answer: Well the 9 answer is 900,000 and 3 answer is 300,000. The 9 answer is 600,000 greater than the 3 answer

Step-by-step explanation:

In order to achieve a margin of error of 0.5 hours, the researcher would need a sample size of 26 from each population, i.e., a total of 52 high school students To determine the required sample size for a desired margin of error in estimating the difference between the means of two populations, we can use the formula:

n = (Z * σ / E)^2

where:

- n is the required sample size,

- Z is the z-score corresponding to the desired confidence level,

- σ is the estimated standard deviation of the population, and

- E is the desired margin of error.

In this case, we are given a 95% confidence interval with a margin of error of 0.5 hours. The conservative value for the degrees of freedom is 1.01, corresponding to the t-distribution.

To calculate the required sample size, we need the estimated standard deviation of the population. Since the standard deviations are not provided for each population separately, we can use the average of the two standard deviations as an estimate. Therefore, σ = (3 + 2) / 2 = 2.5 hours.

Plugging in the values into the formula, we have:

n = (1.01 * 2.5 / 0.5)^2

n = 5.05^2

n ≈ 25.5025

Since the sample size needs to be a whole number, we should round up the result to the nearest integer. Therefore, the required sample size is 26.

Hence, in order to achieve a margin of error of 0.5 hours, the researcher would need a sample size of 26 from each population, i.e., a total of 52 high school students (26 from the suburban district and 26 from the city district).

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F distribution is used with the global test of the regression model to reject the null hypothesis.

The hypothesis test will be conducted using a novel distribution. After the English statistician Sir Ronald Fisher, it is known as the F distribution. A ratio, the F statistic is (a fraction). One set of degrees of freedom is for the denominator, and the other set is for the numerator.

According to the null hypothesis, all group population means are equal. Because it is assumed that the populations are normal and that they have similar variances, the equal means hypothesis indicates that the populations have the same normal distribution. All groups are samples from populations with the same normal distribution, according to the null hypothesis. According to the alternative theory, at least two of the sample groups are drawn from populations with various normal distributions.

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Answer:

0.111 hope that helps you

Answer:

its about the degrees.

Step-by-step explanation:

In a right triangle, the sum of the interior angles will always be 180°. Since a right angle is half that (90°), it has to be the biggest angle in the triangle and the side across from it will always be the longest.

Based on the uninhibited growth model, we would predict that the population of Cary in 2001 would be approximately 101,656.

What is quadratic equation?

it's a second-degree quadratic equation which is an algebraic equation in x.

The uninhibited growth model assumes that the population grows exponentially over time. We can use the formula for exponential growth to predict the population of Cary in 2001:

P(t) = P0*\(e^{(rt)}\)

where:

P(t) = the population at time t

P0 = the initial population

r = the growth rate

e = the mathematical constant e (approximately 2.71828)

t = the time elapsed since the initial population measurement

We can use the population measurements from 1980 and 1987 to estimate the growth rate:

P0 = 21763

P(1987) = 39387

t = 7 years

r = ln(P(1987)/P0)/t

r = ln(39387/21763)/7

r = 0.0935

Now we can use this growth rate to predict the population in 2001:

P(2001) = P0 * \(e^{(rt)}\)

P(2001) = 21763 * \(e^(0.0935*21)\)

P(2001) ≈ 101,656

Therefore, based on the uninhibited growth model, we would predict that the population of Cary in 2001 would be approximately 101,656.

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The calculated value of the commission percentage is 4%

From the question, we have the following parameters that can be used in our computation:

Hourly rate = $15

Commission = x%

So, the function of the earnings is

f(x) = x% * 1400 + Hourly rate * Number of hours

This gives

When the total earning is 176, we have

x% * 1400 + 15 * 8 = 176

This gives

x% * 1400 + 120 = 176

So, we have

x% * 1400= 56

Divide

x = 4

Hence, the commission percentage is 4%

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Answer:

9

ten's go for the number 10

91=9-1 9 in 90 so its 9.

so therefore your answer is 9

Step-by-step explanation:

Answer:

Um can put a picture or something cause I can't give you answer without a picture

Step-by-step explanation:

Answer:

answer D

Step-by-step explanation:

let s estimate the D.

(2x+5) is a common factor so we can write

\((2x+5)(3x^2+(-5x)+(-4)) = (2x+5)(3x^2-5x-4)\)

and this is the expression of the question

hope this helps

The correct answer would be D

Hope this helps! :)

Answer:

see explanation

Step-by-step explanation:

(a)

To find the first 4 terms substitute n = 1, 2, 3, 4 into the n th term formula.

a₁ = 1 + 5 = 6

a₂ = 2 + 5 = 7

a₃ = 3 + 5 = 8

a₄ = 4 + 5 = 9

For the 10 th term substitute n = 10, that is

a₁₀ = 10 + 5 = 15

The first 4 terms are 6, 7, 8, 9 and the 10 th term is 15

(b)

Substitute n = 1, 2, 3, 4 and 10 into the n th term formula

a₁ = 2(1) - 1 = 2 - 1 = 1

a₂ = 2(2) - 1 = 4 - 1 = 3

a₃ = 2(3) - 1 = 6 - 1 = 5

a₄ = 2(4) - 1 = 8 - 1 = 7

a₁₀ = 2(10) - 1 = 20 - 1 = 19

The first 4 terms are 1, 3, 5, 7 and the 10 th term is 19