algebra
posted by garrett .
Which properties did Carmen use to solve the following problem?
17 + (45 + 23)
17 + (23 + 45)
(17 + 23) + 45
40 + 45
85
Respond to this Question
Similar Questions

math, correction,plz
can someone correct these for me plz.... Problem#36 Use Property 2 to simplify each of the following radical expressions. Radical (10)/(49) My answer: (radical(2 times 5))/(7) Use the properties for radicals to simplify each of the … 
Algebra
I need help with this problem: Use the five properties of exponents to simplify each of the expressions. (y^5)^3(y^3)^2/(y^4)^4 
Mathhelp!!!
Elly writes the following expression on the blackboard. (13+24)+0+7 Use three properties of addition to simplify the expression. Include the names of the properties you use. what properties of addition are there cause im not sure!!!! 
algebra
2. The level of thorium in a sample decreases by a factor of onehalf every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite in millions of years? 
mathplease help!
Use the properties of lines to parallel solve the problem. If p ðF q and mÚ8 = 52‹, what are the measures of the other angles? 
Algebra
I'm really lose with this problem...HELP Using Cramer Rule If D=O use another method to solve 2x/35y/2=3/2 x/4+5y/2=7/2 I don't know where to begin on how to solve this problem. 
math
give a problem that you could simlify using the communitive and associsative properties. then,show the steps to solve the problem an label the comunitive and associative properties 
algebra
Alicia finished the race 3.75 seconds befor Kaye. Donna finished the race5.09 seconds after Carmen. Carmen finished the race 10 second before Kaye. Anders finished 4.89 seconds after Kaye. How many seconds earlier did Carmen finish … 
Algebra 1
Solve the equations and inequalities using algebraice properties for the following: 28x + 6(3x + 5) = 60 3(x2)8x<44 
PreAlgebra
Use properties of equality to simplify each of the following expressions so that you can simplify them in your head. Identify the properties used and describe how you used them. 1. 4 • (–3) • 5