Question

calculate.$(7.5 \times 10^{3})(5 \times 10^{9})$write your answer in scientific notation.

Explanation:

Step1: Multiply the coefficients

$7.5 \times 5 = 37.5$

Step2: Multiply the powers of 10

$10^3 \times 10^9 = 10^{3+9} = 10^{12}$

Step3: Combine and adjust to scientific notation

$37.5 \times 10^{12} = 3.75 \times 10^{13}$

Answer:

$3.75 \times 10^{13}$