It should be 5 different ways
Answer:

Step-by-step explanation:
we know that
The perimeter of rectangle is equal to

In this problem we have


substitute in the formula and solve for L

simplify


Answer:
D
Step-by-step explanation:
Im pretty sure it's D so Lets hope it is
To solve this problem you must apply the proccedure shown below:
You must switch the variables, and then, you must solve for
, as following:

Therefore, as you can see, the answer is: 
Answer:
Step-by-step explanation:
In scientific notation, it would be 10^1. the 7s cancel out and -7- -8 is 1. It would be 10 to the first power or just 10.