After being rearranged in simplified, which of the following equations could be solved using the quadratic formula? check all that apply.
a. 2x^2+x^2+x=30
b. -x^2+4x+7= -x^2-9
c. 5x+4=3x^4-2
d. 9x+3x^2=14+x-1

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?