−1 4/5 + (−1/4) + (−1/5) add and simplify, please only right answer and proof of why you think your answer is correct, if you took the test yourself and posted an answer here, please place an image of the correct answer on the test.

-2 1/4

Step-by-step explanation:

-9/5-1/4-1/5

-10/5+-1/4

-2-1/4

-2*4/4-1/4

(-2*4-1)/4

-9/4

mixed number= -2 1/4

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answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,