3 years ago

HELP PLS! I NEED AN ANSWER

Mathematics

1 answer:

bija089 [108]3 years ago

5 0

Answer:

It A or D I think you should go with D

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Write an expression that represent the sum of r and 7

Butoxors [25]

"The sum of r and 7" can be represented as r + 7

3 0

2 years ago

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtain

slega [8]

Answer: 8359

Step-by-step explanation:

The formula for sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\frac{z_{\alpha/2}}{E})^2$

Given : The significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}}=z_{0.025}=\pm1.96$

Previous estimate of proportion : $p=0.32$

Margin of error : $E=0.01$

Now, the required sample size will be :-

$n=0.32(1-0.32)(\frac{1.96}{0.01})^2=8359.3216\approx8359$

Hence, the required sample size = 8359

5 0

2 years ago

Plz Help I will give Brainliest Answer.

Anni [7]

the answer is C, because you solve 2.815-749, and after you divide the result per 4, so it is 1/4

8 0

3 years ago

The demand function for a product is given by p = −0.05x2− 0.3x + 8 where p is the unit price in dollars and x is the weekly dem

mr Goodwill [35]

Answer:

The answer is 5300 units.

Step-by-step explanation:

The equation will be exactly lie below if the price is 5$:

$5=-0.05x^2-0.3x + 8\\0=-0.05x^2-0.3x+3$

Roots of the parabol will be:

$x_{1}=-11.3\\x_{2}=5.3$

In fact that there will be no negative production, The consumer surplus will be 5300 units

6 0

2 years ago

Please help ....!!!!!

Alinara [238K]

Answer:

Step-by-step explanation:

44444444444444444

7 0

2 years ago