Help answer this please

Mathematics

1 answer:

PolarNik [594]4 years ago

8 0

I only know the answer to the first question which is 5.

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Simplify the following : x^2y^-3 / x^5y^2

Likurg_2 [28]

Answer:

Step-by-step explanation:

$\frac{a^{m}}{a^{n}}=a^{m-n}\\\\a^{-m}=\frac{1}{a^{m}}\\\\\\\frac{x^{2}y^{-3}}{x^{5}y^{2}}=x^{(2-5)}*y^{(-3-2)}\\\\ = x^{-3}*y^{-5}\\\\=\frac{1}{x^{3}y^{5}}$

7 0

3 years ago

Read 2 more answers

Find the surface area of the rectangular prism. SA = sum of all 6 sides

wolverine [178]

Answer:

10*5 = 50

10*4 = 40

5 * 4 = 20

The total is 110 but we can't forget there are 2 sides to each of those planes and so the area = 220 square meters

Step-by-step explanation:

7 0

3 years ago

A ski resort has 3 lifts, each with access to 6 ski trails. Explain how you can find the number of possible outcomes when choosi

svetlana [45]

You could multiply 6 times 3 to get your answer. The answer would be 18

4 0

3 years ago

A group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. Use the range rule of thumb

kompoz [17]

Answer:

The adult male foot length of 24.3 cm is significantly low.

Step-by-step explanation:

We have been given that a group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. We are asked to find the range rule of thumb to determine whether he adult male foot length of 24.3 cm significantly low or significantly high.

The range rule of thumb states that usual values in a normal standard deviation lies within 2 standard deviation from mean that is $\mu-2\sigma$ , where $\mu=\text{ Mean and }\sigma=\text{Standard deviation}$ .