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nexus9112 [7]
3 years ago
15

Work out (8×10^-2)−(4×10^-4) Give your answer in standard form.

Mathematics
2 answers:
creativ13 [48]3 years ago
8 0
The answer is -39,200

Explanation:
If you do (8x10^-2) that would = 800
And then if you do (800 - 4 x 10^-4) = 10 x 10 x 10 x 10 = -39,200
tiny-mole [99]3 years ago
7 0

Answer:

7.96 x 10^2

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10

. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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