Answer:
6x = 42
Step-by-step explanation:
The formula to find the area of a rectangle is
. Since we have a value for the width, we simply need to find what to multiply to 6 to get 42.
Let x = length
6x = 42
We then divide both sides by 6 to find the value of x.


So we know the length is 7.
To check the answer we substitute x with 7.


10? Im not sure though my friend just told me it was 10
Answer:
4.243
step by step explanation:
8•13=104
7•13=91
6•13=78
104+91+78=273