Answer:
Step-by-step explanation:
-9x - 15y = -6
9x + 11y = 14
-4y = 8
y = -2
3x - 10 = 2
3x = 12
x = 4
(4, -2)
D is your answer if you times 8 and 2 together to get your A& B
The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17
To estimate you would round the numbers, so it would be 7,000 - 4,000 = 3,000.
Answer:
Step-by-step explanation:
