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3 years ago

There are 25 employees in a office.22 have cell phones 19 have cars, and 2 have niether. How many employees have both.

Mathematics

1 answer:

mezya [45]3 years ago

3 0

Answer:

Step-by-step explanation:

For this question, we know that there are 25 people. We will subtract for this question to see how many employees have both a car and a phone.

22 - 19 = 3

The answer is 3. When you subtract, you get 3.

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What is the mode of the following numbers?<br> 3,7, 5, 2, 5, 5, 2,5

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3 years ago

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BRAINLIEST!!!!!!!!!!! FOR THE BIG BRAIN BIH

Ksju [112]

Answer:

the value of x n lengh of pq is 12.6

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3 years ago

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Debra, age 28, earns $4740 per month. Every month she saves $410. Additionally, she has $2520 in outstanding credit cards and ma

bagirrra123 [75]

Answer:

8.65%

Step-by-step explanation:

We have been given that Debra earns $4740 per month. Every month she saves $410. Additionally, she has $2520 in outstanding credit cards and makes a $210 monthly payment of these cards.

$\text{Savings ratio}=\frac{\text{Savings}}{\text{Income}}\times 100\%$

Upon substituting our given values in above formula, we will get:

$\text{Savings ratio}=\frac{410}{4740}\times 100\%$

$\text{Savings ratio}=0.08649789\times 100\%$

$\text{Savings ratio}=8.649789\%$

$\text{Savings ratio}\approx 8.65\%$

Therefore, Debra's approximate savings ratio is 8.65%.

6 0

3 years ago

A news station would like to conduct an exit poll to determine the likelihood that a highly debated amendment will receive enoug

vladimir1956 [14]

Answer:

The expression is $n = (\frac{1.645*0.5}{0.03})^2$

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

What expression would give the smallest sample size that will result in a margin of error of no more than 3 percentage points?

We have to find n for which M = 0.03.

We have no prior estimate for the proportion, so we use $\pi = 0.5$ . So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.645\sqrt{\frac{0.5*0.5}{n}}$

$0.03\sqrt{n} = 1.645*0.5$

$\sqrt{n} = \frac{1.645*0.5}{0.03}$

$(\sqrt{n})^2 = (\frac{1.645*0.5}{0.03})^2$

$n = (\frac{1.645*0.5}{0.03})^2$

The expression is $n = (\frac{1.645*0.5}{0.03})^2$

3 0

3 years ago

raineys group designed a flag. they used 234 sq inches of green fabric. twice as much green fabric as orange fabric. 3 times as

Strike441 [17]

Answer:

The total area of the flag was 394 square inches.

Step-by-step explanation:

Given that Rainey's group designed a flag, and they used 234 square inches of green fabric, twice as much green fabric as orange fabric, and 3 times as much green fabric as yellow fabric and they had 35 sq inches of yellow fabric left, to determine the total area of the flag the following calculation must be performed:

234 + 234/2 + (234/3 - 35) = X

234 + 117 + (78 - 35) = X

234 + 117 + 43 = X

234 + 160 = X

394 = X

Thus, the total area of the flag was 394 square inches.

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3 years ago