Question

Show your smartness by answering the questions! First one to answer gets Brainlest!

Answer 1

Answer:

3.56*10^13

Step-by-step explanation:

8.9* 10^4  * 4*10^8

Multiply the number out front and then the exponents

8.9 * 4  * 10^4 * 10^8

When we multiply powers when the bases are the same, we add the exponents

35.6 * 10^(4+8)

35.6 *10^12

But this is not in proper scientific notation.  Only one digit before the decimal

Move the decimal one place to the left, that means we need to add 1 to the exponent

3.56 *10^(12+1)

3.56 * 10^13