# Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Question 173986: Okay, this is just part of an equation involving fractions that i am doing, but i was wondering,can you factor u^2+u^2v^2+v^2 into two binomials? Thats all i really need for the problem. thank you :) Click here to see answer by jim_thompson5910(28476)

 Question 174365: You have exactly \$537 to spend on party gifts for your rich uncle’s birthday party. You decide to get watches for the ladies (at \$27.98 each), and beepers for the men (at \$23.46 each). You know that the number of watches required will be 3 times as much as the number of beepers. How many of each item do you buy? Click here to see answer by ankor@dixie-net.com(15624)
 Question 174365: You have exactly \$537 to spend on party gifts for your rich uncle’s birthday party. You decide to get watches for the ladies (at \$27.98 each), and beepers for the men (at \$23.46 each). You know that the number of watches required will be 3 times as much as the number of beepers. How many of each item do you buy? Click here to see answer by Mathtut(3670)

 Question 174567: rolex smudgepot owns 17 ounces of gold.this is one ounce more than three fourths of the amount he owned last year. how much did he own last year? Click here to see answer by Mathtut(3670)

 Question 174566: in a week mike ran 8km farther than bill,while pete ran 1km less than 3 timesas far as bill. if pete ran 15km farther than mike, how many kilometers did bill run? Click here to see answer by Mathtut(3670)

 Question 174577: reduce the expression to lowest terms: Thank you Click here to see answer by Edwin McCravy(8880)

 Question 174583: Jim is 6 years older than Pam. Two years ago Jim was twice as old as Pam. How old is each now? Milk that has 5% butterfat is mixed with milk that has 2% butterfat. How much of each is needed to obtain 60 gallons of milk that has 3% butterfar? Click here to see answer by Mathtut(3670)

 Question 174575: reduce the expression to the lowest term: 4x^2 2x^9 Click here to see answer by tutorcecilia(2152)

 Question 174574: reduce the rational exprssion to lowest terms. assume that the variable represent only numbers for which the denominators are nonzero: a^2 - b^2 a - b Click here to see answer by Mathtut(3670)

 Question 174572: Which numbers cannot be used in place of the variable in the rational expression: 2y + 1 y^2 – y - 6 Click here to see answer by Mathtut(3670)

 Question 173528: (x-y)^2-z^2/(x+y)^2-z^2 / x-y+z/x+y-z = x-y-z/x+y+z I need to see the work, because I'm just not understanding it. Thank you. Click here to see answer by Alan3354(30959)

 Question 174634: peform the operation: w^2-1 . w-1 (w-1)^2 w^2+2w+1 Click here to see answer by nycsub_teacher(90)

 Question 174697: Simplify the following expression. Show each step of the solution and name the property that you used in each step 4a-7+(7-3a) Click here to see answer by jim_thompson5910(28476)

 Question 174698: As a participant in your school's community service project, you volunteer a total of 40 hours over the course of the school year. Your volunteer hours include serving at a soup kitchen, picking up trash at several local parks, and collecting toys for needy children. You spend 4 times as many hours collecting toys as picking up trash, and 2 hours less serving at the soup kitchen than picking up trash. 1. Write a system of equations to represent the given information and solve using the elimination method for each variable. Thank You for all your help in advance. =) Click here to see answer by Mathtut(3670)

 Question 174724: If 12x+7y=19 and 4x-y=3 then what is the value of 8x+8y? Click here to see answer by jim_thompson5910(28476)

 Question 174734: I need help with these problems. Could you please help me? I do them over and over and they dont make sense when I check them. (they are inequalities 1) -(6b-2)>O 2)-2(r-3)+7 (is greater than or equal to) 8 Thanks Click here to see answer by stanbon(57219)

 Question 174838: Whis is the result of dividing 48a^3+32a^2+16a by 4a? Click here to see answer by jim_thompson5910(28476)

 Question 174840: If the value of b is 7, then what is the value of the expression -3b^2+25? Click here to see answer by jim_thompson5910(28476)

 Question 175046: One side of a rectangle is 3 inches shorter than the other side, and the perimeter is 54 inches. what are the dimension of the rectangle? Click here to see answer by actuary(112)

 Question 175050: Two angles of a triangle have equal measures, but the thirds angle's measure is 36 degrees less than the sum of the other two. Find the measure of each angle of the triangle. Click here to see answer by actuary(112)

 Question 175051: An angle is 25 degrees less than the measure of its complement. What is the measure of the smaller angle? Click here to see answer by Mathtut(3670)
 Question 175051: An angle is 25 degrees less than the measure of its complement. What is the measure of the smaller angle? Click here to see answer by actuary(112)