2 Answers

Persia · Answer 1 · 2023-01-10T14:59:26+0000

Answer:

700200

Explanation:

When multiplying by 10 with an exponent just add the amount of zeros that are in the exponent

700000+200

700200

7.002 x 10^5

Mattew Eon · Answer 2 · 2023-01-13T12:04:55+0000

${ \boxed{ \red{ \tt{2.007 * {10}^(2)}}}}$

Explanation:

${ \blue{ \tt{(7 * {10}^(5)) + (2 * {10}^(2))}}}$

To add or subtract numbers in sciemtific notations, the power of 10 that exponent must be same. After that coefficient are added or subtracted.

Let us shift the exponent from 5 to 2 in 7×10^5.

${ \blue{ \tt{(0.7 * {10}^(4))}}}$

${ \blue{ \tt{(0.07 * {10}^(3))}}}$

${ \blue{ \tt{(0.007 * {10}^(2) )}}}$

then,

${ \blue{ \tt{(0.007 + 2) {10}^(2) }}}$

${ \blue{ \tt{2.007 * {10}^(2)}}}$

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