6 people meet for a business lunch. Each person shakes hands once with each other person present. How many handshakes take place?

a. 30

b. 21

c. 18

d. 15

e. 10

Square root of 9 simplified

In 2008 the population of 10 to 14-year-olds in the United States was 24 84163 right this number in expanded form

To determine the number of deer in a forest, a forest ranger tags 280 and releases them back into the forest, later 405 deer are caught out of which 45 of them are tagged. estimate how many deer are in the forest

Find the circumference of a circle whose area is 24 pie

Which equation is not written in slope-intercept form? A y + 1 = 3x B y = - x - 7 C y = 3x - 1 D y = - x

Angelina spend $50 on 16 packages of cookies for her club members. sugar cookies cost $2.50 per package and chocolate chip cookies cost $3.50 per package. how many packages of each cookie does Angelina buy?

What are solutions to the equation below x^2 + 3x-18=0

A circle's diameter is 22 inches. What is the circle's circumference

You grew 3.8 inches since last year. If you are 61.2 inches tall now, how tall were you a year ago? Write and solve an equation.

A square and rectangle have the same perimeter. The rectangle is 13 cm long and 7 cm wide What is the length of a side of the square