The first one is 2x^2+2x-2
the second one is 2x^2-2x-2
the third one is 6h+6k
For number 11 the third angle would be equal X as the second angle is, since the two sides next to the those angles are congruent. Then you would have to set an equation saying that 2x + 38= 180 and then you can just solve for X
Answer:
i accidentaly put awnser and i dont know how to get out of here
Step-by-step explanation:
The answer is A. 88.8 cm2
Work:
74 x 2 = 148
14.8 = 29.6
Add them = 177.6
then 
3 6 7 4
+ 6 7 8 9
~~~~~~~
10 4 6 3
