Answer:
8x²+7x+14
Step-by-step explanation:
4x²+4x²= 8x²
9x-2x= 7x
14=14
8x²+7x+14
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49 5/8 or, if you would like it in decimal form, 49.625
Choice c 77 because I did the math please give me Brainlyest
This is simple, what is the total degree of a triangle? 180
so add up 70 + 30 is 100, the answer to x is 80