Use Pythagorean theorem
A^2 + B^2 = C^2
12^2 + B^2 = 15^2
Solves for b
Answer:
(x,y) = (2 - 1)
Step-by-step explanation:
2x - y = 5
5x + 2y = 8
y + 2x = 5
2y + 5 x = 8
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I tried to answer as best as I can, please mark brainliest!
Given that

, it has PDF

and thus CDF

The 25th percentile is the value

such that

. We have
To work this out you need to do 80 - 64 - 4.16 = 11.48
he received $11.48 change