CPhill

A +  B + C  = 180   so

65+ (3x - 10) + (2x)  = 180

55 + 5x  =  180     subtract 55 from each side

5x = 125               divide both sides b 5

x  = 25°

So B =  3(25) - 10   =  65°

And C  = 2(25)  = 50°

Nah.....I think you "stealth" posted it.....LOL!!!!!!

(1/16)^[1/2]*(1/16)^[-1/2]   using a^n * a^m  =  a^(n + m), we have

(1/16)^(1/2 -1/2)  =  (1/16)^0  = 1

cos θ   = 0        take the cosine inverse

arccos (0)  = 90°  = pi / 2  rads

THX for the correction, Guest.....

The new mean  =   [ 100(267) - 6(688) ] / 94  ≈ 240.13

Slope  = 8/3       y intercept  = 0

I think this should be    2, 8, 32 , 128.....

The 10h term is given by  :    2^{2n - 1}   =  2^{2(10) - 1}  = 2¹⁹  = 524,298

This is a parabola opening upward  with a vertex at (2, 5)

The domain is all real numbers

The range is [5, +infinity )

sin 300°  =   - √3 / 2