9. -6xy+2xz
10. b(a-c-3d)
11. -3xy+xz-4xw
also i think that 8 is supposed to be a(10-13)
The sum of all angles (around the black dot) is 360°
All 5 angles (if you forget the red line) are the same; so each angle is 360°/5 = 72°
So Angle 1 is 72°
Answer: Yes the estimate is very close
Step-by-step explanation:
Multiply 4.9 x 7 then Multiply 6.4 x 7
if 35.7 is in between these 2 numbers this is correct
Answer:
true
Step-by-step explanation:
