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3 years ago

How do i do yhis and i need help

Mathematics

1 answer:

hjlf3 years ago

5 0

Answer:

well -2 x -5 = 10 and 10 x -5 = -50 so multiply by negative five

Step-by-step explanation:

-50 x -5 = 250 250 x -5 = -1250

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Suppose you toss a coin 100 times and get 59 heads and 41 tails. based on these results, what is the probability that the next

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The probability is 59/100

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3 years ago

Find the area of the figure. If needed, round to the nearest tenth.

Umnica [9.8K]

Answer:

$18 \:ft^2$

Step-by-step explanation:

The area of a trapezoid.

$(a+b)h\frac{1}{2}$

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3 years ago

Can someone help me with this. Will mark brainliest. Thank you.

Butoxors [25]

Answer:

∠SVU = 49°

Step-by-step explanation:

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If you didn't know an inscribed angle is equal to half the measure of its intercepted arc.

Hence ∠SVU = arc SU / 2

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3 years ago

Annual starting salaries for college graduates with degrees in business administration are generally expected to have a populati

valkas [14]

Answer:

A sample of 139 should be taken.

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 $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, 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.

Population standard deviation of $3,000.

This means that $\sigma = 3000$

How large a sample should be taken if the desired margin of error is $500?

A sample of n is needed.

n is found when M = 500. So

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

$500 = 1.96\frac{3000}{\sqrt{n}}$

$500\sqrt{n} = 1.96*3000$

Dividing both sides by 500

$\sqrt{n} = 1.96*6$

$(\sqrt{n})^2 = (1.96*6)^2$

$n = 138.3$

Rounding up:

A sample of 139 should be taken.

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3 years ago

Which expression shows the factorization of 48?

kipiarov [429]

Answer:

2 × 2 × 2 × 2 × 3, or $2^{4}$ ×3.

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3 years ago

How do i do yhis and i need help​

How do i do yhis and i need help