Answer:
(5x +4y)^2
Step-by-step explanation:
The first and last terms are both perfect squares, and the middle term is twice the product of their roots. That means the trinomial is the perfect square trinomial ...
25x^2 +40xy +16y^2 = (5x +4y)^2
_____
It matches the pattern ...
a^2 +2ab +b^2 = (a +b)^2
if 3/5 are boys
1- 3/5
5/5 -3/5 = 2/5 are girls
2/5 * 30 = 60/5 = 12
12 are girls
- 30/91
-2(7-15) / 4
-2(-8) = 16
16/4 = 4
Answer is 4
The answer is C S = {reptiles} T = {mammals}
