Multiply and simplify.

2a(5a exponent 2 + 3a - 17)

a: 7a exponent 3 + 5a exponent 2 - 15a

b: 7a exponent 2 + 5a - 15

c: 10a exponent 2 + 6a - 34

d: 10a exponent 3 + 6a exponent 2 - 34a

Didn't understand your question...Can you plz write down clearly, which is exponent of what?

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

squares, rhombus, rectangles