I need the answers to these question (with steps)

Mathematics

2 answers:

DiKsa [7]3 years ago

5 0

Answer:

1. -1/5

2. -y⁴

3. 5¹¹

Step-by-step explanation:

1. simplify -5^ -1

1/(-5)

-1/5

2. simplify -1/y^ -4

-1 × y⁴

-y⁴

3. simplify 5^ 4 x 5^ 7

5^(4+7)

5¹¹

coldgirl [10]3 years ago

4 0

Answer:

-5^ -1 = 1/(-5) = -1/5

-1/y^(-4) = -(1/(1/y^4)) = -y^4

5^4 x 5^7 = 5^(4 + 7) = 5^11

Hope this helps!

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Delicious77 [7]

For this case we can make the following rule of three:
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x --------> 100%
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x = (100/70) * (21)
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x = (10/7) * (21)
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Thus,
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Answer:
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Answer:

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