Distance = 30 mph * time
distance = 4 mph * time
distance = 30 mph * t
distance = 4 mph * (17-t)
Since distance is equal then
30 mph * t = 4 mph * (17-t)
30t = -4t + 68
34t = 68
t = 2 hours
We see the return trip time is (17 -t ) which is 15 hours.
The beginning trip time is 2 hours.
Double Check
Beginning trip = 30 miles * 2 = 60 miles
Return trip = 4 miles * 15 = 60 miles.
Answer:
67.5
Step-by-step explanation:
4.5x6x2.5=67.5
Answer:
The area of the rectangle is 42 units^2
Step-by-step explanation:
we know that
The area of rectangle is equal to

In this problem
AB=DC
BC=AD
see the attached figure with letters to better understand the problem
we have that

the formula to calculate the distance between two points is equal to

we have the points

<em>Find out the distance BC</em>
we have

substitute in the formula



<em>Find out the distance AB</em>
we have

substitute in the formula



<em>Find out the area</em>

we have


substitute

Area of square = (length)²
OR
