Question

Express (1.25 x 107)+(5 x 10 %) in the form of k x 10' where k lies between 1 and 10.

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Answer 1

Answer:

The given expression is (4)0.5×(0.5)4

We can write 4=22 and 0.5=21

Hence, we will have,

(22)0.5×(21)4

We know that, (am)n=am×n and (ba)m=bmam

Hence, we can further simplify the expression as,

(2)2×0.5×2414

⇒(2)1×2414

We also know that, am1=a−m

Hence, 21×2−4

Also, am×an=am+n

Hence, 21−4=2−3

Step-by-step explanation:

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