Before a meeting, 10 people shake hands with each other. How many handshake's will there be in total?

-25

-55

-45

-35

There are 5 red roses, 3 yellow roses, and 8 white roses in a tray. If Stephanie picked 2 roses one after the other without replacing, then what is the probability of picking a white rose first and a red rose next?

Determine if these lines are parallel, perpendicular or neither y=3x+5 and y=-6x+9

Addison studies a tarantula that is 30 millimeters long. Supposeshe uses a microscope to magnify the spider by 4 X 10 2nd Power. How long will the spider apprear to be?

What is at answer for this addition problem 3/2+4/5=

The class with the greatest mean sales in a spring fundraiser will win a prize. The mean for Eric's class is $148. The mean for Natalia's class is $152. Natalia's sale total is $150. If Natalia moves to Eric's class, the mean for each increases.

Fernando surveyed a group of people to find their shoe size and the number of children in their family. He graphed the ordered pairs (shoe size, number of children) for each person.

The sum of x and 9 is divided by 2. That quantity is equal to 3x

Joe has a spinner with labeled 1, 1, 2, 2, 4. If he spins 20 times, how many will be 2?

How do i find the zero of (x-10) (4x-3) = 0

A rectangle has a height of 5x and a width of x + 2, express the area of the rectangle.