Using proportions, it is found that:
- Peter is walking at a rate of 3 km/h.
- MJ is biking at a rate of 9 km/h.
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- Peter is walking at a rate of x km/h.
- MJ is biking 6 km/h faster than Peter, thus 6 + x km/h.
- Opposite directions, thus, their distance increases at a rate of (6 + 2x) km each hour, as
.
6 + 2x km each hour, 18 km after 1.5 hours, thus, the rule of three is:
1h - (6 + 2x) km
1.5h - 18 km
Applying cross multiplication:






Then:
- Peter is walking at a rate of 3 km/h.
- MJ is biking at a rate of 9 km/h.
A similar problem is given at brainly.com/question/24112433
Answer:
Width is 10 1/2 inches and the length = 21 inches.
Step-by-step explanation:
Let the width be x then the length us 2x inches.
Perimeter = 2x + 2(2x) = 63
6x = 63
x = 10 1/2 inches.
There is a 47% decrease in Jane's closet space.
Step-by-step explanation:
Old measurement of closet = 66 square feet
New measurement of closet = 34.98 square feet
Change = New value - Old value
Change = 34.98 - 66 = -31.02 square feet
The negative sign indicates the decrease.
Decrease percent = 

There is a 47% decrease in Jane's closet space.
Keywords: decrease, percentage
Learn more about percentages at:
#LearnwithBrainly
The answer is 50 y squared minus 4 x squared