Jane is running on a circular track with a radius of 50 yards. a mile is 1760 yards. what is the least number of complete laps she must run to cover a distance of at least 4 miles?

Jane needs to run 22 laps to cover 4 miles

Solution:

From given question,

Jane is running on a circular track with a radius of 50 yards

Radius = 50 yards

The total distance covered in 1 lap is equal to circumference of circular track

The circumference of circle is given as:

Where, "C" is the circumference and "r" is the radius

Thus one lap is equal to 314 yards

Convert yards to miles

Given that,

1 mile = 1760 yards

Therefore, 314 yards is equal to,

What is the least number of complete laps she must run to cover a distance of at least 4 miles?

In 1 lap, she covers 0.1784 miles

Let "x" be the number of laps needed to cover 4 miles

Therefore,

1 lap = 0.1784 miles

x lap = 4 miles

This forms a proportion and we can solve the sum by cross multiplying

Thus she needs to run 22 laps to cover 4 miles

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )