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2 years ago

Please help answer all of them! for BRAINLIEST and more!! (Question In picture)

Mathematics

1 answer:

ohaa [14]2 years ago

4 0

Answer:

A)-7y^3-3y^2-2y-8

B)-7x^3y^3-12x^2y^2-xy

C)2xy^3+3xy^2-5

A)14x^2

B)15a^2+30ab

Step-by-step explanation:

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What is 9/10 divided by -3/5 as a mixed number

solong [7]

Its -1.5 or in other fraction form its -1 1/2.......hope that helps

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3 years ago

Read 2 more answers

A caterpillar is 2 3⁄6 inches long. A snake is 38 3⁄6 inches long. How much longer is the snake?

ahrayia [7]

Subtract 23 3/6 from 38 3/6.

6 0

3 years ago

When x=16 the value of y is 28. write an equation for y in terms of x

Burka [1]

Answer:

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Step-by-step explanation:

y=1.75

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2 years ago

The proportion of left handed people in the population is about 0.10. Suppose a random sample of 300 people is observed. (a) Wha

pantera1 [17]

Answer: $(\hat{p})\sim N(0.10,\ 0.017)$

Step-by-step explanation:

Sampling distribution of the sample proportion $(\hat{p})$ :

$(\hat{p})\sim N(p,\ \sqrt{\dfrac{p(1-p)}{n}})$

The sampling distribution of the sample proportion $(\hat{p})$ has mean = $\mu_{\hat{p}}=p$ and standard deviation = $\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$ .

Given : The proportion of left handed people in the population is about 0.10.

i.e. p=0.10

sample size : n= 300

Then , the sampling distribution of the sample proportion $(\hat{p})$ will be :-

$(\hat{p})\sim N(0.10,\ \sqrt{\dfrac{0.10(1-0.10)}{300}})$

$(\hat{p})\sim N(0.10,\ \sqrt{0.0003})$

$(\hat{p})\sim N(0.10,\ 0.017)$ (approx)

Hence, the sampling distribution of the sample proportion $(\hat{p})$ is $(\hat{p})\sim N(0.10,\ 0.017)$

8 0

3 years ago

which graph would be used to figure out how many students spend a given amount of time doing homework?

Mandarinka [93]

Answer:

Both graphs can be used.

Step-by-step explanation:

because the time and the difficultly of the grade both depend on how long they take. Therefore it would be both graphs can be used.

5 0

2 years ago