Answer: Ellen traveled 75 miles at 25 miles per hour.
Step-by-step explanation:
Let x represent the number of miles that she travelled at 25 miles per hour.
If the total distance that she covered is 120 miles, then the distance that she covered at 15 miles per hour is (120 - x) miles
Time = distance/speed
Time taken to travel at 25 miles per hour is expressed as
x/25
Time taken to travel at 15 miles per hour is expressed as
(120 - x)/15
Since the total time for the trip is 6 hours, it means that
x/25 + (120 - x)/15 = 6
Multiplying both sides of the equation by 75, it becomes
3x + 5(120 - x) = 450
3x + 600 - 5x = 450
3x - 5x = 450 - 600
- 2x = - 150
x = - 150 / - 2
x = 75
He should spend at least $4.00 on each 4.00/22
The correct answer is: x < 1.25
To solve this, we following the same steps as when solving inequalities. We just have to remember to reverse the sign if we multiply or divide by a negative number.
-1.2x - 8.2 > -9.7
-1.2x > -1.5
x < 1.25
Answer:
Step-by-step explanation:
With a slope of 1 and a y intercept of -3
y = 1x - 3
y = 1(-2) - 3
y = -5
(-2, -5)