Question

How many places to the left should the decimal point be moved to write 7.2 × 10-9 in standard form?

Answer 1

what is the exponent

Answer 2

-9

Answer 3

so that tells you that you need to move the decimal point to the left (the exponent is negative)

So you move 9 spots to the left since the exponent is -9

Answer 4

ok thanks

Answer 5

np