Urvi Justin and Noah all work at a clothing store. This week Noah made three times more than Urvi. and Urvi made $100 less than Justin. Of they all made $2,100, how much did each person make?​

If the triangle drawn is a right triangle with a hypotenuse of 17 units and a long leg of 15 units, then we simply use the Pythagorean theorem to solve for the measurement of the short leg.

a² + b² = c²  ; a and b are the legs, c is the hypotenuse.

a² + 15² = 17²
a² = 17² - 15²
a² = 289 - 225
a² = 64
√a² = √64
a = 8

The length of the missing side is 8 units.