2 + (x+y) = (2+x) + y is an example of what algebraic property

Amy has a mass of 50 kg and she is riding a skateboard traveling 10 m/s what is her momentum? A. 50 kg m/s B. 5 kg m/s C. 10 kg m/s D. 500 kg m/s

Rachel fills 13 water bottles per hour. Alyssa fills 15 bottle of water per hour. This week Alyssa filled an additional 5 bottles of water. Write an expression that represents the weekly water of bottle filled.

The following m&m colors are in the bowl: 4 yellow, 6orange, 3green, 5blue, 2brown what is the probability of selecting a yellow

Orange paint requires 5 gallons of red paint to 3 gallons of yellow. if 24 gallons of orange paint are needed, how many gallons of red are needed?

Amelie says that every square is a regular quadrilateral. Do you think Amelie's generalization is true? Explain

How do you know if a number is smaller or bigger

A bookmark has a perimeter of 46 centimeters and an area of 102 square centimeters. What are the dimensions of the bookmark?

Which expression shows how to use place value and the distributive property to find 56 (82) ? 56 (80) + 56 (2) 56 (8) + 56 (2) 50 (6) + 80 (2) 50 (80) + 6 (2)

The expanded form of 10 to the power of 0

Five is three more than a number n. I don't understand this at all!