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

u = x2

u = 2x2

u = x4

u = 4x4

Chuck drinks 57.65 fluid ounces of water per day. How much water does he drink in 6 days?

Alex sells cars at Keefe Palmer Ford he earns $400 a week plus $150 per car he sells if you're in the 1450 last week how many cars did you sell

What number is equivalent to 0.17 * 10

Evaluate the expression x : y for x = 8 and y = 16. A. The answer is X divided by Y B. Put in 8 and 16 to get 816 C. 1/2 D. 2

Complete the statements about circle z. a central angle, such as angle of circle z, is an angle whose vertex is and whose sides are radii of the circle. angle is not a central angle of circle z.

Divide the following polynomials, then place the answer in the proper location on the grid. Write answer in descending powers of x. (2x3 + x4 - 6x2 + 11x - 10) (x2 + 2 - x)

What is 3.75 rounded to

A child takes a nap averaging three hours and gets an average of 12 hours of sleep at night. Nap time and night time sleep can each vary by 30 mins. What are the possible time lengths for the child's nap and night time sleep? ... ?

4x - 10 ≥ 22 or x - 5 < - 6

What does control for eximerment mean .