Harry kept a weather journal for September. The sun was shining on 4 out of every 5 days. On what percent of the days was the sun not shining?

Manny observed a Northern Gannet, a deep diving seabird, hovering at a height of 10 meters above the ocean surface. The bird then dove into the water, diving to a depth of 16 meters before coming to the surface.

Simplify 0.75 (5v+11) - 0.25 (11+v)

Find the sum : 5/4 + (-11/4)

Number with the digit 8 in the tens place

How many relay teams of 4 members can be chosen from a 6 member team to run in a relay race?

David has two cylinder shaped bottles of punch, each with a height of 12 inches and a radius of 2 inches. He wants to fill a half-sphere punch bowl to the brim with the punch.

Sam goes to lunch with Sara and keith. Each person orders $6 lunch special. Sam agrees to pay the bill. How much does he have?

Multiply the polynomials (x + 4) (x + 4)

Solve this problem using the above process. The sides of a triangular lot are represented by x, 3x, and 3x + 2. Find each side if the perimeter is 632 feet. The first length is The second length is The third length is

A certain human red blood cell has a diameter of 0.000007 meters. Write an expression that represents this diameter, in meters in scientific notation.