Which property explains why these two expressions are equal?

(w +

2

3

) + 5 = w + (

2

3

+ 5)

Find the mean (average) of each set of numbers. Round your answer to the nearest tenth 17, 17, 11, 10, 1, 20, 17, 17

3x + 1 = y; 2x + 3y = 25

When factored, the trinomials x^2-2x-15 and x^2-9x+20 have one binomial factor in common. What is this factor? 1. x-7 2. x+7 3. x-5 4. x+5

The sentence 3 + (5+2) = (5+2) + 3 illustrates A: the commutative property of addition. B: the associate property of addition. C: the distributive property of multiplication over addition. D: the additive identity element.

What is answer to 3x^2 + 72=33x

What is reference angle for 150 degrees

Which function is decreasing? A. Price of a house as a function of size B. Numer of soft drinks sold at a ballpark as a function of outdoor temperature C. The time it takes the ice to melt as a function of temperature. D.

Assume that you select 4 coins at random from 8 coins: 6 dimes and 2 quarters. what is the probability that all of the coins selected are dimes? enter your answer as a fraction

What is the value of 2 in 5,678.321

Ken finished one-half of his homework problems at school. He finished two thirds of the remaining problems at home. He had 5 problems left. How many problems were there in total? A. 20 B. 25 C. 30 D. 40 E. 60