explain why the set {4,4,20,20} has a standard deviation of 8

Multiply and simplify the product. - 12i * 3i

The circumference of a circle if 65π. In terms of pi, what is the area of the circle?

What is 9.1 rounded to the nearest whole number

Find the volume of a box with a length of 5 cm, a width of 5 cm, and a height of 10 cm.

4. An acre is equal to 43,560 square feet, and there are 5280 feet in a mile. If a farm has the shape of a rectangle measuring 0.8 mile by 1.1 miles, what is the area of the farm in acres?

Simplify 50/5+3*4/2-1

What is LCM of 4 and 9 by listing the multiples

What's the product of 1.5% of 67,200

Your friend can clap his hands 28 times in 12 seconds. How many times can your friend clap his hands in 0.5 minute?

Factor 9x^2+66xy+121y^2