We will use the FOIL method to solve this.
(7x-7)(x+1)
Multiply 7x by x. Then, multiply 7x by 1. Then, multiply -7 by x. Then, Multiply -7 by 1.
![7x^{2} + 7x - 7x -7](https://tex.z-dn.net/?f=7x%5E%7B2%7D%20%2B%207x%20-%207x%20-7)
Now, we need to simplify by combining like terms.
![7x^{2} -7](https://tex.z-dn.net/?f=7x%5E%7B2%7D%20-7)
If you look, -7x and 7x are gone. This is because they cancel each other out.
I hope this helped and maybe consider giving me brainliest :)
Answer:
22.5 miles per hour (rounded answer)
Step-by-step explanation:
This is a fraction equal to
18 miles ÷ 0.8 hours
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 0.8
18 miles ÷ 0.8
0.8 hours ÷ 0.8
=
22.5 miles
1 hour
=
22.5 miles
hour
= 22.5 miles per hour
each photocopie cost .60 cents
A = bh
Divide by b
A/b = h
To solve this problem, we simply divide the new quantity by the old quantity.
57 ÷ 60 = 0.95
Now convert this decimal into a percent.
We convert decimals into percents by moving the decimal point two places to the right and make it into a % sign.
0.95 = 95%
And finally, subtract 95% from 100%.
100% - 95% = 5%
So, the decrease was 5%.