It will take Jennifer 4 hours to complete her swim along the Charles River at a speed of 9 miles per hour.
Speed is the ratio of the given distance and time.
It shows how fast an object is moving at a given time.
The formula is Distance / Time.
We can find the distance or time when the required values are given using this formula.
We have,
We can use the formula:
distance = rate × time
to solve this problem.
Since Joe swam at a speed of 12 miles per hour for 3 hours, his distance is:
distance = rate × time
= 12 miles/hour × 3 hours
= 36 miles
Since Jennifer is swimming the samepath, her distance will also be 36 miles.
We can use the same formula to find how long it will take her to complete the swim:
distance = rate × time
36 miles = 9 miles/hour × time
Solving for time, we get:
time = 36 miles ÷ 9 miles/hour = 4 hours
Therefore,
It will take Jennifer 4 hours to complete her swim along the Charles River at a speed of 9 miles per hour.
Learn more about speed here:
#SPJ3
x to 0.25 and 6 to 1.5
Answer:
X = 1
Look at the attachment