Question

calculate.
\\(\left(7.239 \times 10^{10}\
ight) + \left(5.8 \times 10^{8}\
ight)\\)
write your answer in scientific notation.

Explanation:

Step1: Match exponents of 10

Rewrite $7.239 \times 10^{10}$ as $723.9 \times 10^{8}$

Step2: Add the coefficients

$723.9 \times 10^{8} + 5.8 \times 10^{8} = (723.9 + 5.8) \times 10^{8}$
$= 729.7 \times 10^{8}$

Step3: Convert to scientific notation

Adjust to proper form: $7.297 \times 10^{10}$

Answer:

$7.297 \times 10^{10}$