Select ALL the correct answers. Observe the expression below and select the true statement(s). The "10" in the third term is a coefficient. The "x" in the second term is an exponent. The "(7 + 2x)" in the first term is a factor. The "3y" in the first term is a factor. The "9" in the second term is a coefficient. The "2" in the first term is a constant.

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

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4