What times 2 equals 100

What does the "!" mean in math? for example, 5! = 120 and 6! = 720

How old am I? 16 17 4

Find the circumference of a circle with diameter = 38 in.

Michael opens a store credit card when he purchases a new computer. The interest rate is 25.45%. He charges $2,380 to the card, and can pay $850 per month. What will the total cost of his purchase be? $2,380.00 $2,480.20 $2,985.71 $3,160.20

Hours spent 6/5,4/12,7/8,2/6 which is more than 1/2 hours spent

The period of F (x) = 2 cos x is

A city block has 3 stores and a 20 foot mural on one side of the street. On the other side of the street there are 5 stores. If all the storefronts are equal length, what's the length of the city block?

Во время прогулки папа сделал 16 снимков.

Suppose someone tells you that she has a triangle with sides having lengths 2.6, 8.1, and 8.6. Is this a right triangle? Why or why not? Is there an angle in the triangle larger than 90 degree?

The equation of lime k is y = - 1/5x-1/8 what is the equation of the line that us perpendicular to lime k and passes through (0,0)