The formula for conditional probablity states that

Since we know both numerator and denominator, we only need to plug in the values:

For this case, we can model the problem as a triangle with a right angle.
Where,
x, y: lengths of the sides of the triangle
d: hypotenuse of the triangle
We then have the following relationship:

Clearing d we have:
Answer:
A functions that would best model the situation above is:
D square root
Combine like terms
assuming those 2s are exponents
-3x^2+2y^2+5xy-2y+5x^2-3y^2
move all x's together all y's together and all xy's together
-3x^2+5x^2+2y^2-3y^2+5xy
combne like terms
2x^2-y^2+5xy
3 terms
1 term is negative
as it is a markup, you multiple the cost by 1.12 (the 1 shows that the cost is increasing). the new cost is 8.9488 or $89.95 if you round.
Answer:
x = 10
Step-by-step explanation:
The 2 chords are equal in length so
7x + 5 = 9x - 15
2x = 20
x = 10