Which polynomials are prime? check all that apply. x2 + 4 x2 – 5x + 2 x2 + 10x – 24 x2 – x + 27 2x3 – 4x + 5x2 – 10

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1