Factor 25 out of 25a^2−100.
Factor 25 out of 25a^2.
25(a^2)−100
Factor 25 out of −100.
25a^2+25⋅−4
Factor 25 out of 25a^2+25⋅−4.
25(a^2−4)
Rewrite 4 as 2^2.
25(a^2−2^2)
Factor.
Since both terms are perfect squares, factor using the difference of squares formula, a^2−b^2=(a+b)(a−b) where a=a and b=2.
25((a+2)(a−2))
Remove unnecessary parentheses.
25(a+2)(a−2)
I believe this is correct.
Answer:
15.4
Step-by-step explanation:
98×2.2÷14 = 215.6 = 15.4
To get the ratio we have to put into numerator number of girls and into denominator number of boys. Then simplify it
![\frac{16}{20}= \frac{16:4}{20:4}= \frac{4}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B16%7D%7B20%7D%3D%20%5Cfrac%7B16%3A4%7D%7B20%3A4%7D%3D%20%5Cfrac%7B4%7D%7B5%7D%20%20%20)
It also can be denoted as 4:5
Integers because if you subtract any two integers you’ll always get an integer