Divide 160 by .15 because when you want to divide a number by a percent, you move the decimal in front of the percent number.
40 mph would be 120 miles in 3 hours (120/40)
80 mph is 120 miles in 1.5 hours(120/80)
3 - 1.5 = 1.5, not 3 hrs
Change the speed to 20 mph( 1/2 the speed) to double the hours.
20 mph = 6 hours(120/20)
40 mph = 3 hrs(120/40)
6 - 3 = 3 hours difference
I will answer assuming that the equation is 4(1-x) < -12+2x
1) 4 - 4x < - 12 + 2x
2) 2x + 4x > 4 + 12
3) 6x > 16
4) x > 16 / 6
5) x > 8 / 3
So the graph is all the real numbers greater than 8/3 which may be represented by a straight line from 8/3 to the right toward infinity
//////////////////////→
---------|--------------|--------------|----------o-----|-------------->
0 1 2 8/3 3
Answer:
37.5
Step-by-step explanation:
Let the length of the shorter piece be x and the longer piece be 5x.
Short piece + Long piece = 285 inches
x + 5x = 225
6x = 225
x = 225 ÷ 6
x = 37.5
