Twenty times the square of a non-zero number is equal to 15 times the number. What is the number?

Can a trapezoid have four obtuse angles

Suppose a college surveyed its students and found that two-thirds of them sleep at least seven hours each night. on a campus of 918 students, how many students could be expected to sleep at least seven hours each night?

Examples of properties communative, associative, and identity?

P (x) = 4x^4+8x^3-7x^2-21x-9 what is the rational zero

If the length of a rectangle, originally 4cm by 2cm, is increased by x, what is the perimeter and area of the new rectangle

Would the height of a circle be considered the diameter?

How do you determine if polygons are similar?

If 3 3/4 lb. of candy cost $20.25, how much would 1 lb. of candy cost?

carrie started with 12 ounces of water when she began her walk when she finished walking she had 2 1/4 ounces of water left how much water did she drink

William earns $15 each time (t) he mows a lawn. Which equation can be used to determine how many lawns William mowed if he earned $75?