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VladimirAG [237]
2 years ago
8

BRAINLIEST!!! he dot plot shows predictions for the winning time in the​ 200-meter sprint. The winner finished the race in 22.2

seconds. What is the greatest percent error among the​ predictions?
The greatest percent error among the predictions is

Mathematics
1 answer:
Alenkasestr [34]2 years ago
7 0

Answer: Approximately 3.15%

Explanation:

The true finishing time is 22.2 seconds. The prediction furthest from this is 22.9 seconds. This is a difference of 22.9-22.2 = 0.7 seconds. Divide this over the true time value to get (0.7)/(22.2) = 0.03153 which is approximate.

Move the decimal point to the right 2 spots to get to 3.153%; round this value however you need to.

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<u>Given:</u>

It is given that the ridge is 360 inches tall.

<u>Assumptions:</u>

Assume you are 170.1 cm tall which equals 67 inches tall, the height from your eye to the floor is 360+67 = 427 inches.

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<u>Solution:</u>

A right-angled triangle can be formed where the angle is 60°, the distance between you and the dog is the hypotenuse of the triangle and your height from the floor is the adjacent side of the triangle.

Assume the hypotenuse of the triangle measures x inches.

To determine the length of the hypotenuse, we determine the cos of the angle.

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cos A = \frac{427}{x} , x = \frac{427}{cos60} , cos60=0.5.

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So if the ridge is 360 inches tall and you are 67 inches tall and the angle A is 60°, the distance between your dog and you is 854 inches.

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