3 years ago

What is -a^-2 if a=-5

1 answer:

3 0

$-a^{-2}=-(-5)^{-2}=-\left(\dfrac{1}{-5}\right)^2=-\dfrac{1}{25}$

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Nina [5.8K]

Answer:

none are solutions unless you meant for it to be less than or equal to, which in that case itd be 22, 24, 26

Step-by-step explanation:

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3 years ago

ryzh [129]

60-41 1/2=18 1/2 18 1/2 divided by 1/2=37/2*2 (cross cancel 2s)=37

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3 years ago

Alexxandr [17]

The answer is b 3,5,9

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3 years ago

ahrayia [7]

Answer:

Step-by-step explanation:

Use cosine:

$cosine=\dfrac{adjacent}{hypotenuse}$

We have

$adjacent=42\\hypotenuse=BR\\\alpha=31^o$

$\cos31^o\approx0.8572$

Substitute:

$\dfrac{42}{BR}=0.8572$

$\dfrac{42}{BR}=\dfrac{8,572}{10,000}$ <em>cross multiply</em>

$8,572BR=420,000$ <em>divide both sides by 8,572</em>

$BR=\dfrac{420,000}{8,572}$

$BR\approx49.0$

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3 years ago

AlexFokin [52]

How can we help you?

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3 years ago