What substitution should be used to rewrite 4x4 - 21x2 + 20 = 0 as a quadratic equation?

u = x2

u = 2x2

u = x4

u = 4x4

Find the difference. 9 3x - 4 2x2

The distance between a negative number and a positive number is 12 1/2 what are 2 number that fulfill this property

A resturant orders 50 pounds of hamburger every week. they sell six pounds of hamburger every day. how much hamburger is left at the end of the week?

A New York City gift shop sells miniature Statue of Liberty sculptures that are 7.8 in. tall. The scale of the model to the actual statue is 1:232. What is the height of the actual statue to the nearest foot?

Find a degree 3 polynomial with leading coefficient of 4 and zeros - 2, 1, and 5

Subtract [4 - 4 - 2] - [4 - 3 5]. / A. [0 - 7 3] B. [0 - 1 - 7] C. [0 - 1 3] D. [0 - 1 7]

3/3 as a whole number

The side length of a square is equal to?

How many km are in a meter

Mary can read 6 pages in 4 minutes how many can she read in 14 minutes?