Simplify square root of negative 81

Maria has a jewelry box and wants to increase its size. She decides she will double the length, width and height. How many times bigger will the volume of the new box be? 2 3 5 8

What is the circumference of a circle with an area of 50.24cm^2 Use 3.14 for pi

Z = - 12i + 11 what are the real imaginary parts of z

Calculate (full working out) 5.16 x 2.93 =

Solve each equation. Check your solution. 4x - 8 = 5x

Bob needs to mix 2 cups of liquid lemonade concentrate with 3.5 cups of water to make lemonade. Bob has 6 cups of lemonade concentrate. How much lemonade can he make?

The temperature decreased overnight by 15.2°C to a temperature of - 12.8°C. Suppose t represents the temperature before it decreased. Which equation can be used to represent this situation? A. t - 15.2 = - 12.8 B. t + 12.8 = - 15.2 C. t - 12.8 = 15.

The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound.

What is the surface area of a sphere with a circumference of 50 ft? Round the answer to the nearest tenth.

The table shows the prices for games and Bella soccer league. her parents and grandmother attend a soccer game. how much theu spend if they all went together in one car?