Answer:
C(n, 2)a^(n-2)b^2
Step-by-step explanation:
Generally, the expansion is written in decreasing powers of "a", so the first few terms would have variable constellations that look like ...
a^n, a^(n-1)b, a^(n-2)b^2, ...
The coefficients would be (in order), C(n, k) for k increasing from 0, so the coefficient of the 3rd term would be C(n, 2).
Answer:
It might be A sorry if I am wrong
Step-by-step explanation:
B = amount of students who chose Bulldog
n = amount of students who chose lion
t = amount of students who chose tiger
so.. "t" chose tiger, ok
"<span>Four times as many students chose Bulldog as chose Tiger"
namely, if "t" chose tiger, then 4 times that many chose Bulldog, thus
b = 4t"</span><span>Twice as many students chose Lion as chose Tiger"
namely, if "t" students chose tiger, twice as many chose lion
n = 2tnow, we know a total of 273 students were surveyed, thus
</span>

<span>
</span>
Answer:
BG=9
Step-by-step explanation:
Triangle ABG is created by the lines through ABC
Triangle ABG is a isosceles triangle which means that it has two even sides. The base of that triangle is 12 and one side is 9 which makes the corresponding side (BG) also 9.