Answer:
8.47 Hours
Step-by-step explanation:
The total distance covered in 12 hours with a speed of 60 mph
Distance = 12 x 60 = 720 miles
Now we are required to find the time taken if the same distance is travelled with a speed of 85 mph
Time = 8.47 hours
<span>A rectangle is twice as long as it is wide. it's width is 5 1/2 cm. find the area of the rectangle.</span>
answer: 60 1/2 cm.
Answer:
If the number your dividing has a decimal, move the decimal point all the way to the right, counting how many spaces you have moved it. Then, move the decimal point in the number you're dividing the same number of places to the right.
Step-by-step explanation:
For this case, the first thing we must do is define variables:
p: plane speed
w: wind speed
With the wind in favor, the speed is:

With the wind against the speed is:

Rewriting both equations, we have the following system of equations:

Then, solving the system of equations (graphically for example), we have the solution is:

Therefore, jet stream's speed:
Answer:
A) p + w = 960; p - w = 600; jet stream's speed = 180 km / h
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