Apply the laws of exponents, calculate the result and express the result in scientific notation, and as a decimal: (8.1*10^-4)^2 format your answer like this: the result of the scientific notation is __* the result as a decimal is _.

The answer is:

The explanation is shown below:

1. You have the following expression given in the problem above:

2. By applying the properties of exponents, the power rule, you can multiply the power 2 by and the power -4, then:

3. To write as a decimal, you must move the decimal point 7 places to the left. Therefore, you have:

the answer is 48m^2!

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9