Hello there! :)
Answer:

<em><u>*THE ANSWER MUST HAVE A POSITIVE SIGN!*</u></em>
Step-by-step explanation:
First, you subtract by 8 from both sides of an equation.

Then, you subtract by the numbers from left/right.

, <em>is the CORRECT/FINAL ANSWER!</em>
<em>Hope this helps you!</em>
<em>Have a nice day! :)</em>
<em>:D</em>
<em>-Charlie</em>
<em>Thanks!</em>
Answer:
80 pages
Step-by-step explanation:
We can use ratios to solve
168 papers x papers
------------------ = -----------------
21 minutes 10 minutes
168*10 = x * 21
1680 = 21x
Divide each side by 21
1680/21 = 21x/21
80 = x
80 pages
Step-by-step explanation:
what about now hope it helps
Answer:
B)
Step-by-step explanation:
225x^2 - 1=
(15x)^2 - 1^2=(*)
(15x-1)(15x+1)
A^2 - B^2 =(A-B)(A +B)............. (*)