What is the coefficiant of (x^4)( y^3) iterm in the expansion of (x-2y)^7

The coefficient of is -280

Step-by-step explanation:

Solving the Binomial expansion using the Pascal's triangle, it would be observed that an expansion to the power of 7 can be solved using;

1  7  21  35  35  21  7  1

Thus;

= 1. + 7.(-2y) + 21. + 35. + 35. + 21. + 7.x +

        = -14y +84 -280 + 560 - 672 + + 448x - 128

Therefore, the coefficient of is -280

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°