tertre

Yes, it looks like homework questions.

Yes, thank you! 

1. 2 B's and 2 C's repeat, so the total number of possible ways to arrange it is \(\frac{6!}{2!*3!}=\boxed{60}.\)

2. I think the answer is \(\binom{5}{1}*\binom{6}{1}*\binom{7}{2}=\boxed{630}. \)

Fixed, thanks Melody.

First, set x=3.444

Then, 10x=34.4444

9x=31 and x=31/9=3 4/9.

Just multiply both sides by 2.4, to yield an answer of 1760*2.4=4224 yards. 

180-75=105 degrees, answer? This is because of opposite angles.

Melody is right. This is called the binomial theorem, and it's pretty helpful to find coefficients and constants in these types of expressions.

Starting from the first term, we have \(\binom{7}{0}(3c)^7(4d)^0+\binom{7}{1}(3c)^6(4d)^1+\binom{7}{2}(3c)^5(4d)^2+...+\binom{7}{7}(3c)^0(4d)^7\)

Thus, the fourth term should be \(\binom{7}{3}(3c)^4(4d)^3\) .

Fixed.

Just plug in the values.

For A(2), we have 3-2(2)^2+4^2=11.

For A(1), we have 3-2(1)^2+4^1=5

Thus, 11-5=6.