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3 years ago

HELP HELP HELP HELP HELP PLZZ GIVE AN ACTUAL ANSWER.

Mathematics

2 answers:

mr_godi [17]3 years ago

8 0

Answer: v ≥ 12

Step-by-step explanation: The inequality above states that the gift card, v could have $12 or possibly more on it because we know the most expensive app his gift card can buy is $12.

11111nata11111 [884]3 years ago

7 0

Answer:

V ≥ 12

Step-by-step explanation: the giftcard is equal or greater then 12 dollars

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What is 9/10 divided by 2/5

MakcuM [25]

$\frac{9}{10}:\frac{2}{5}=\frac{9}{10}*\frac{5}{2}= \boxed{\frac{9}{4}}$

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3 years ago

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Natali5045456 [20]

Answer:

f(x)= $\frac{7}{5}$ x- $\frac{6}{5}$

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First put 7x-5y=6 into slope intercept form

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Then put it into f(x) form

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2 years ago

In the formula C = 2.1, C stands for

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3 years ago

$4 is what percent of $50? Round to the nearest tenth if necessary?

Assoli18 [71]

Answer

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3 years ago

A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la

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Answer:

The 96% confidence interval for the population proportion of customers satisfied with their new computer is (0.77, 0.83).

Step-by-step explanation:

We have to calculate a 96% confidence interval for the proportion.

We consider the sample size to be the customers that responded the survey (n=800), as we can not assume the answer for the ones that did not answer.

The sample proportion is p=0.8.

$p=X/n=640/800=0.8$

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.8*0.2}{800}}\\\\\\ \sigma_p=\sqrt{0.0002}=0.014$

The critical z-value for a 96% confidence interval is z=2.054.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_p=2.054 \cdot 0.014=0.03$

Then, the lower and upper bounds of the confidence interval are:

$LL=p-z \cdot \sigma_p = 0.8-0.03=0.77\\\\UL=p+z \cdot \sigma_p = 0.8+0.03=0.83$

The 96% confidence interval for the population proportion is (0.77, 0.83).

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3 years ago