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3 years ago

11

Bill started to run on a treadmill after setting its timer for 84 minutes. The display says that he has finished 22% of his run.

How many minutes have gone by?
Round your answer to the nearest tenth.
minutes

1 answer:

Bond [772]3 years ago

3 0

Answer:

18.5 minutes

Step-by-step explanation:

84(mins) times .22(22%) equals 18.42 which rounds up to 18.5 mins

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3 years ago

Which expression can be used to find the length of AT?

irina [24]

Answer:

$\large\boxed{\large\boxed{\overline{AT}=12.5(cos66\º)}}$

Explanation:

In a right triangle the angle between the hypotenuse and the adjacent leg to the angle are related by the trigonometric ratio cosine.

Cosine is the ratio of the adjacent leg to the hypotenuse:

In the right triangle ART, AT is the hypotenuse, AR is the ajacent leg to the angle 66º, and RT is the opposite leg to the angle 66º.

Then, the length of AT and 12.5 is related by the cosine ratio:

$cos(66\º)=\dfrac{\overline{AT}}{12.5}$

Multiplying both sides of the equation by 12.5in:

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