When you multiply a same number but with different powers, you can simply add the powers together. So, in your question, add the powers -1 and -7 together.
7^(-1) x 7^(-7) = 7^(-8)
When you divide a same number but with different powers, you subtract the power at the top with the power from the denominator. So, -8 - (-7) = -1.
7^(-8) / 7^(-7) = 7^(-1)
So your answer would be 7^(-1).
Hopefully my explanation was clear?
These numbers from least to greatest would be: 4.72, 4.74, 4.98
I think it should also be 16 but I’m not pretty sure so hopefully you get it right !
Percent means parts ot of 100
25%=25/100=1/4
ratio is 1:4 or 2:8 or 6:12
What is 7x5x4, it is 140 so the volume is 140in^3 its a pretty simple problem