What is the square root for - 100

Jared bought a package of pens containing 20 pens. If 3/4 of the pens had black ink, how do you determine the number of pens with black ink?

A recipe calls for 3/4 cup of flour, but Kelli has only 1/3 cup of flour. How much more flour does she need?

Find the sum or difference of this polynomial. (3x^3+10x+5) - (x^3-4x+6)

It take three people two hours to paint a wall. How long will it take if only 5 people are painting?

At the art supply store pastels cost $2.25, drawing pads cost 6.50, and pencils cost $1.17. Kelly bought 3 pastels, 2 drawing pad, and 12 pencils. How much money did kelly spend?

The probability of some event is 40%. What is the probability of its complementary event? A. 40% B. 60% C. 100% D. The complementary event can have any probability.

Solve for x. 2/5≤x-4

Solve the inquality 2x>8 -

Lacey is putting 3902 books into boxes. She needs to put 89 books in each box. Approximately how many boxes will she need.

The school is selling cookies and shirts. Cookies sell for $10 and shirts sell for $20 each. A total of 390 items were sold and $6500 was raised. How many of each items were sold?