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alexandr1967 [171]
3 years ago
15

(2 to the power -1 ÷ 5 to the power- 1)2 × -5/8 to the power -1​

Mathematics
2 answers:
Luba_88 [7]3 years ago
8 0

Answer:

-8

Step-by-step explanation

2 to the power of -1 = 0.5

5 to the power of -1 = 0.2

0.5/0.2 = 2.5

So,

(2.5)2 x -5/8 to the power of -1

-5/8 = -0.625

-0.625 to the power of -1 = -1.6

So,

(2.5)2 x -0.625

5 x -0.625

= -8

san4es73 [151]3 years ago
3 0

Answer:

-8

Step-by-step explanation:

(2^-1 ÷ 5^-1) = 5/2

(5/2) x 2 = 10/2 or 5

-5/8 ^-1 = - 8/5

5 x - 8/5 = -40/5 or -8

Hope its helpful ☺️

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