Answer:
y=4
Step-by-step explanation:
-2(y-7)=9y-30
-2y+14=9y-30
-2y-9y=-30-14
-11y=-30-14
-11y=-44
y=4
Answer:
Step-by-step explanation:
To factorize ,
6a+10ab
=2a(3+5b) [ common 2a from both the terms]
D(t) = -4t^3 + 40t^2 + 500t = 4088
4t^3 - 40t^2 - 500t + 4088 = 0
t = 7
Therefore, the plane has flown 4088 km 7 hours after it took off.
Answer: D. -10
Step-by-step explanation:
640 - 20 - 110 - 520 = -10