A light bulb consumes 1440 watt-hours per day. How long does it take to consume 6120 watt-hours?
1 answer:
You might be interested in
Let sin⁻¹(
) = x
Therefore, sin(x) =
x should lie in first quadrant because √3 and 2 both are positive.
Therefore, sin(x) = 60° = π/3
Therefore, sin(x) =
x should lie in first quadrant because √3 and 2 both are positive.
Therefore, sin(x) = 60° = π/3
Answer:
The rate of the boat in still water is 40 miles per hour
The rate of the current is 10 miles per hour
Step-by-step explanation:
we know that
The speed or rate is equal to divide the distance by the time
Let
x ----> the rate of the current (miles per hour)
y ----> the rate of the boat in still water (miles per hour)
we have that
<em>going upstream </em>
----> equation A
<em>going downstream </em>
----> equation B
Solve the system of equations by elimination
Adds equation A and equation B
<em>Find the value of x </em>
therefore
The rate of the boat in still water is 40 miles per hour
The rate of the current is 10 miles per hour