Answer:
x= 7
Step-by-step explanation:
Theorem: The sum of the angles of a triangle is 180
Memorize that theorem
8x - 9 + 63 + 70 = 180
8x + 124 = 180
8x = 56
d=-5.5 should be the answer
Ans: 81 square metre
Answer: 6 units
You count the numbers between A and C