Find the value of x in each of the following proportions.
a. 6:9 = x:72
b. 8/3 = 40/x
C. X:55 = 3:5
d. 33/x = 11/5

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units

What is the gcf of 20c^3-5c^4+30c^6