Question

Multiply 2.5 x 10^10 by 3.5 x 10^-7

Answer 1

Answer:

$=8750x^2$

Step-by-step explanation:

$\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}\\=2.5x\cdot \:3.5x\cdot \:10^{10-7}$

...

$\mathrm{Multiply\:the\:numbers:}\:2.5\cdot \:3.5=8.75\\=10^3\cdot \:8.75x^2$

$\mathrm{Multiply\:the\:numbers:}\:8.75\cdot \:1000=8750\[$

=8750x^2