70°
Step-by-step explanation:
Total angle in a triangle is 180
∠C = 180 - 70 - 40
= 180 - 120
= 70
7. d. 64
8. i. 32
9. c. 125
10. j. none of the above
11. d. 81
12. i. 216
13. e. none of the above
14. g. 240
15. e. none of the above
16. g. 32
17. e. none of the above
x=6 and x=3
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