Evaluate the following expression. 1/5^-2 Evaluate 6^-3

Mathematics

2 answers:

Marizza181 [45]3 years ago

7 0

1/5^-2 = 5^2 so this equals

= 25

melisa1 [442]3 years ago

6 0

$( \frac{1}{5}) ^{-2} = ( \frac{5}{1} )^{2} = 5^{2} = 25 \\ \\ 6^{-3} = ( \frac{6}{1} )^{-3} = ( \frac{1}{6} )^{3} = \frac{ 1^{3} }{ 6^{3} } = \frac{1}{216}$

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blsea [12.9K]

Answer:

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Step-by-step explanation:

It is a square, so all sides are the same. That means 3x+3 equals 4x. What number can be subsituted into x to equal 4? If x is 3, then 3x+3 would be 3(3)+3. It equals 12. 4 times 3 is also 12. It works! That also means the square's side is 12 units.

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The triangle's longer sides are 7x-2. Subsitute x in, which is 3, and you get 7(3)-2. It equals 19. The two longer sides of the triangle are the same length, so both are 19 units.

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7 0

2 years ago

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lesya692 [45]

Answer:150

Step-by-step explanation:

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