Answer:
3
Step-by-step explanation:
Of means multiply
20% * 15
Change to decimal form
.20 * 15
3
Answer:
Step-by-step explanation:
Given the algebraic expression;
To make n the subject of formula.
Cross-multiplying, we have;
Rearranging the equation, we have;
Step-by-step explanation:
Elevator's starting point = -90ft
Elevator's position after 15s = -20ft
The elevator did move upwards as
-20ft. > -90ft.
_________________________________
Distance covered by the elevator = -20 + -90
= -20 + 90
= 70ft.
Time = 15s
Speed = distance/time
= 70/15
= 4.7ft/s
