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1. C -- 22.5+36.4+110.1 = 169 A triangle has 180 degrees.
2. D -- 180-(29.1+80) = 70.9
3. 26 -- 180-(122+32) = 26
4. A -- 180-(42.7+90) = 47.3
5. 68 -- 180-(97+15) = 68

6. Last Triangle -- 108+32+76 = 216 216>180 Too big

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!