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3 years ago

I Need Help Please And Thank You

Mathematics

1 answer:

Romashka [77]3 years ago

6 0

C. Yes, because it passes the vertical line test.

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Eric created a rectangular patio using 1 foot square paving stones,which are sold in batches by the dozen. The patio measures 7

Nuetrik [128]

I believe it is 56 because 7•8 is 56 and 1•56 is 56

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3 years ago

What are 6 types of rational numbers

poizon [28]

Answer:

−

Step-by-step explanation:

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4 years ago

The profit P (in thousands of dollars) for an educational publisher can be modeled by P 52b31 5b21b where b is the number of wor

Anna007 [38]

Answer:

The lesser number of workbooks are 1,000

Step-by-step explanation:

The correct question is

The profit P (in thousands of dollars) for an educational publisher can be modeled by P=-b³+5b²+b where b is the number of workbooks printed (in thousands). Currently, the publisher prints 5000 workbooks and makes a profit of $5000. What lesser number of workbooks could the publisher print and still yield the same profit?

we have

$P=-b^3+5b^2+b$

For $P=\$5,000$

substitute in the equation and solve for b

Remember that the profit and the number of workbooks is in thousands

P=5

$5=-b^3+5b^2+b$

Using a graphing tool

Solve the cubic function

The solutions are

x=-1

x=1

x=5

therefore

The lesser number of workbooks are 1,000

<u><em>Verify</em></u>

For b=1

$P=-(1)^3+5(1)^2+1$

$P=5$ -----> is in thousands

$P=\$5,000$ ----> is ok

7 0

3 years ago

The median age of residents of the United States is 31 years. If a survey of 100 randomly selected U.S. residents is to be taken

makvit [3.9K]

Answer:

P (x≥ 57) = 6.7789 e^-8

Step-by-step explanation:

Here n= 100

p = 31/100 = 0.31

We formulate the null hypothesis that H0: p= 0.31 against the claim Ha: p≠0.31

The significance level is chosen to be ∝= 0.05

The test statistic x to be used is X, the number U.S. residents is to be taken which is at least 57

The binomial calculator gives the

P (x≥ 57) = 6.7789 e^-8

IF ∝= 0.05 then ∝/2 = 0.025

We observe that P (x≥ 57) is less than 0.025

Hence we reject H0 and conclude that p ≠0.31

This is true because for normal distribution the median = mean which is usually the 50 % of the data.

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3 years ago

Meredith picked 4 times as many green peppers as red peppers. If she picked a total of 20 peppers, how many green peppers did sh

Fed [463]

She picked 16 green peppers

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3 years ago