A ceiling fan has

20

-inch blades (so the radius of the circular fan is

20

inches). Suppose the linear speed of the tip of a blade is

10

feet per second.

Two thirds of a number

In 2009 the life expectancy is about 80 life expectancy gains 5.7 years every decade. From 2009 in how many years would humanity achieve a life expectancy of 120 years

How to slice three dimensional figure to result each cross section

Jackie goes to the mall every weekend with her friends. Last week, the group spent $28.00 on 2 salads and 4 fruit smoothies. This week, the group spent $38.00 on 3 salads and 5 fruit smoothies.

Describe and correct that you were in finding the sum 9 + (-6) = - 3

Carmen has $3.60 in her pocket. Waldo has 3/4 of what carmen has. How much money does Walso have in his pocket?

My mom likes to browse every aisle in the clothing store. What does browse probably mean? * to glance at to dance through to make messy or destroy to purchase something

The perimeter of a square is 52cm calculate the area of the square

What is the fifth term of (3 - x) ^6?

Factor 15x3 - 5x2 + 6x - 2 by grouping. What is the resulting expression?