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Mathematics

1 answer:

solniwko [45]3 years ago

6 0

Step-by-step explanation:

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Which expression is equivalent to (a^-3 b/a^-5 b3)^-3? Assume a=0, b=0.

prohojiy [21]

$Use:\\\\\dfrac{a^n}{a^m}=a^{n-m}\\\\(a^n)^m=a^{nm}\\\\a^{-n}=\dfrac{1}{a^n}\\\\(ab)^n=a^nb^n$

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

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3 years ago

What number is a solution of the inequality y is greater than 1.9

hodyreva [135]

The question is, "<span>What number is a solution of the inequality y > 1.9?"

The answer can vary, one of them being 2.

Possible Answers: 2,3,4,5,6,7,8,9,10</span>

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3 years ago

C. A 40-foot ladder reaches 38 feet up the side of a house. How far from the base of the

Svet_ta [14]

Answer: 12.48

Step-by-step explanation:

38x38+bxb=40x40

1444+b=1600

1600-1444=156

$\sqrt156$ =12.48