What is the length of leg y of the right triangle?

13

Step-by-step explanation:

We need to use the Pythagorean Theorem to solve this problem:

, where a and b are the legs of the right triangle and c is the hypotenuse

In this case, we already know b (b = 84) and c (c = 85), so we need to solve for a:

Thus, a = y = 13.

y = 13

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

y² + 84² = 85²

y² + 7056 = 7225 ( subtract 7056 from both sides )

y² = 169 ( take the square root of both sides )

y = = 13

the first dot plot best represents the data

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answer:  

123455421

step-by-step explanation: easy