Answer:
The speed of the current is 5 miles per hour.
Step-by-step explanation:
Given, Joy kayaked up the river and then back in a total time of 6 hours.
The trip was 4 miles each way.
The current was difficult.
Let the speed of current be 'a' miles per hour
If joy kayaked at a speed of 5 mph in still water, we have to find what is the speed of the current?
Now, we know that,
distance = speed x time
So,
Then, total time = time for up stream + time for down stream
Now, let us use quadratic formula, to find a value.
Then,
we can neglect – ve values of speed.
A = 5.71
Answer:
4x-10y
Step-by-step explanation:
Look at the pic...
Answer:
The answer to your question is the third choice 4 / (3d - 12)
Step-by-step explanation:
Data
length = (d -2 ) / (3d - 9)
width = 4/(d - 4)
height = (2d - 6)/(2d - 4)
Process
1.- Multiply the numerators
(d - 2)(4)(2d - 6) = 8(d - 2)(d - 3)
2.- Multiply the denominators
(3d - 9)(d - 4)(2d - 4) = 6(d - 2)(d - 4)(d - 3)
3.- Simplify
8(d - 2)(d - 3) / 6(d - 2)(d - 4)(d - 3)
8 / 6(d - 4)
Simplify 8/3 = 4/3
4/3(d - 4)