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avanturin [10]
3 years ago
6

What is -a^-2 if a = -5? (PLEASE HELP WILL MARK BRAINLIEST!!!)

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

-1/25

Step-by-step explanation:

-a^-2

-(-5)^-2

=-1/25

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Answer:

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Step-by-step explanation:

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Katen [24]

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2 years ago
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3 years ago
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pantera1 [17]

Answer:

-\frac{61}{14}

Step-by-step explanation:

Question: 5 - 7(z+1) = 7(-9-3z)

We multiply the number in front of the bracket first, since that is multiplication.

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Now, we move all the z and all the numbers to each side.

--> -7z +21z = -63 +2

--> 14z = -61

--> z = -61/14

This cannot be simplified further, so z is -61/14.

6 0
1 year ago
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