Find the value of:
a) x2 when x = 6
b) y2 when y= -9
c) z2 when z = 0.7

Step-by-step explanation:

(a)= 6×2= 12

(b)= -9×2=-18

(c)= 0.7×2=1.4

d≈7.07in

step-by-step explanation:

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