4 years ago

What is this answer

Mathematics

1 answer:

Nina [5.8K]4 years ago

6 0

I think it’s the second one

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Together, Bob and Tom take 2 hours to get the yard work done. If Bob works alone, it takes him 6 hours. How long would it take T

gladu [14]

<span>It would take him three hours</span>

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3 years ago

What is the value of this expression when a = 3 and b = -2?

weqwewe [10]

The first step: Simplify the expression with:

$\dfrac{x^n}{x^m}=x^{n-m}\\\\(xy)^n=x^ny^n\\\\(x^n)^m=x^{nm}\\\\x^{-n}=\dfrac{1}{x^n}$

$\left(\dfrac{3a^{-2}b^6}{2a^{-1}b^5}\right)^2=\left(\dfrac{3}{2}a^{-2-(-1)}b^{6-5}\right)^2=\left(\dfrac{3}{2}a^{-1}b^1\right)^2\\\\=\left(\dfrac{3}{2}\right)^2(a^{-1})^2b^2=\dfrac{9}{4}a^{-2}b^2=\dfrac{9b^2}{4a^2}$

The second step: Put the values of a = 3 and b = -2 to the expression:

$\dfrac{9(-2)^2}{4(3)^2}=\dfrac{(9)(4)}{(4)(9)}=1$

<h2>Answer: 1</h2>

4 0

4 years ago

Read 2 more answers

• When x = 6, which inequality is true? also what is 1,402÷37

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Answer:

37.8918918919

Step-by-step explanation:

1,402÷37=37.8918918919

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3 years ago

Bonnie purchased a 30 ounce package of chocalte chunk cookies for $2.40.What is the cost per ounce

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.08 cents per ounce, because 2.40 ÷30 =.08

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4 years ago

A factory that manufactures basketballs spends $4 on each basketball that it produces. Which of the following describes the rate

dedylja [7]

Answer:

C. Linear

Step-by-step explanation:

Because the amount of money is increasing by a constant rate of $4.

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3 years ago