Nine people come to a party and shake hands with each other. If each person shakes the hand of every other person, how many handshakes occur?

Kendall transformed the equation 1/3 (5x - 15 + 4x) = 1 + 3x + 4 into a simpler form as shown 1/3 (5x - 15 + 4x) = 1 + 3x + 4 1/3 (9x - 15) = 3x + 5 3x - 5 = 3x + 5 3x - 3x = - 5 + 5 O = 0 Which statement is correct?

Donald spends a total of $17.43 on peanuts that cost $2.49 per pound. How many pounds of peanuts does he buy? The equation that needs to be solved to find the quantity of peanuts is.

If a circle has a diameter of 10cm what is the radius

Ellen drove 357.3 miles. for each gallon of gas, the car can travel 21 miles. select a reasonable estimate of the number of gallons of gas Ellen used.

The perimeter of a regular octagon is 24a + 48 inches. (a) write an expression for the length of any one side of the octagon. The perimeter of a regular octagon is 18 feet. (b) what is the value of a? (C) find the length of each side of the octagon

Find the solution to the system of equations. -2x+2y=-4 3x+3y=-18

What is the area of 10 3/4 • 12 1/2?

A rectangular sofa cushion is 36 inches by 30 inches by 20 inches. How many cushions can be covered with 38400 square inches of material?

How do you determine if a given set of measurements works for the side lengths of a triangle? (It should be a number)

If cosx = sin20, find the value of x, 0 Solve for x correct to the nearest minute given sin^2 x-3sin xcosx+2cos^2 x=0, where 0≤x≤180