What's the circumference of a
circle with a diameter of 15 inches?
(Use 3.14 for pi)

In the rectangle below ac=30 units what is de

Somone me i want to know what 18 hours out of 24 hours in a fraction

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0