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3 years ago

Given the parent function f(x)=x^3 give the best description of the graph of y = -(2x)^3

Mathematics

1 answer:

GalinKa [24]3 years ago

7 0

Answer:

Reflect and compress

Step-by-step explanation:

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Which number sentence is represented by the model

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0.8 = 1.6. this is because the model is shaded as 1.6 but 0.8 has been shown by underlining it underneath the model.

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collen plans to print x pictures from her camara at a drug store. the expression $0.2x represents the cost of developing the pic

lutik1710 [3]

Answer:

$7.50

Step-by-step explanation:

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What is the square root of 70 million

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3 years ago

Use the expression 5(6 + 4x) to answer the following: Part A: Describe the two factors in this expression. (4 points) Part B: Ho

slamgirl [31]

Answer:

A. 2 factors: 5 and (6+4x)

B. 5: 1 term

(6+4x): 2 terms

C: The coefficient is 4

Step-by-step explanation:

The factors are the parts of expression separate by multiplications, so there are 2 factors: 5 and (6+4x)

The terms of each factor are the terms separate by the sign + or -. So the term of the factor 5 is 1 and the terms of the factor (6+4x) are 6 and 4x

The coefficient of the variable term is the number that is beside the variable. The coefficient of x is 4.

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3 years ago

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir

Ksju [112]

Answer:

We need a sample size of at least 75.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, we find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

The standard deviation is the square root of the variance. So:

$\sigma = \sqrt{484} = 22$

With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

We need a sample size of at least n, in which n is found when M = 5. So

$M = z*\frac{\sigma}{\sqrt{n}}$

$5 = 1.96*\frac{22}{\sqrt{n}}$

$5\sqrt{n} = 43.12$

$\sqrt{n} = \frac{43.12}{5}$

$\sqrt{n} = 8.624$

$(\sqrt{n})^{2} = (8.624)^{2}$

$n = 74.4$

We need a sample size of at least 75.

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3 years ago

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Given the parent function f(x)=x^3 give the best description of the graph of y = -(2x)^3￼￼

Given the parent function f(x)=x^3 give the best description of the graph of y = -(2x)^3