What is the sum of the polynomials? (9x4−13x3−x−7)+(7x3−2x+1) a.) −6x^6+9x^4−3x^2−6 b.)−6x^6+9x^4−x−8 c.)9x^4−6x^3−x−8 d.)9x^4−6x^3−3x−6

answer: group b.

step-by-step explanation:

step-by-step explanation:

hihi so drawing these 2 triangles is fairly simple. all that's left is finding the height of each one. luckily, we have a side length and an angle, so there is a trig function we can use to solve for the height. the easiest one to use would be tangent, since we have 2/3 things needed to find and the third needed is what we are solving for. tan(73°) * 30 ~= 98.13 and tan(73°) * 35 ~= 114.45