Help will give points

85

Step-by-step explanation:

Use the  pythagorean theorem!

(think that is how you spell it )

Pythagorean theorem: a² + b² = c²

a and b are the numbers that you have in this example, c is the side you need!

75² + 40² = c²

5,625 + 1,600 = c²

7,225 = c²

(the square root and square cancel each other out)

85 = c

c = 85

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.