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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 105145: A roofer earns \$24 per hour plus \$36 per hour overtime. If he puts in 40 hours of regular time during a certain week and he wishes to earn \$1200, how many hours of overtime should he work? Click here to see answer by elima(1433)

 Question 105144: A building foundation has a length of 82 ft and a perimeter of 292 ft. What is the width? (Hint: Perimeter + 2 length + 2 x width.) Click here to see answer by elima(1433)

 Question 105216: An auto mechanic has total receipts of \$1861.16 for a certain day. He determines that \$\$1240 of this is labor. The remaining amount is for parts plus 6% sales tax on the parts only. Find the amount of the sales tax he collected Click here to see answer by edjones(7569)

 Question 105275: A concrete mix is in volume proportions of 1 part cement, 2 parts water, 2 parts aggregate, and 3 parts sand. How many cubic feet of each ingredient are needed to make 54 cu ft of concrete? Click here to see answer by edjones(7569)

 Question 105968: . solve for x Click here to see answer by chitra(359)

 Question 105969: . solve for x Click here to see answer by HyperBrain(694)

 Question 106098: Which number must be added to x^2 - 16x to make it a perfect square trinomial? (X squared subtract 16x) Click here to see answer by MathLover1(6625)

 Question 106099: Solve the equation by completing the square. Give exact Solutions. x^2 + 4x - 21 = 0 ( X Squared plus four x Subtract twenty one equals zero.) Click here to see answer by Fombitz(13828)

 Question 106105: I have a question on solving a problem on (solving systems using substitution) the problem is: y=5x+5 y=15x-1 (solve using substitution) Click here to see answer by Fombitz(13828)

 Question 106346: The difference of two numbers is three. The larger number is 33 minus twice the smaller number. What are the numbers? Click here to see answer by stanbon(57282)

 Question 106344: PLEASE HELP!!! I need help solving the following problems: 1. y=2x+7 y=5x+4 2. 3x-2y=0 x+y=-5 3. 4x+3y=-3 2x+y=-1 4. 2x-4y= 3.8 3x-y=17.7 solve all by using substitution! Click here to see answer by elima(1433)

 Question 107024: One number is 2 less than another, if 4 times the largr is subtracted from five times the smaller, the result is 10. Find the numbers. Click here to see answer by scott8148(6628)

 Question 107027: The greater of two numbers is 1 less 3 times the smaller. If 3 times the greater is 5 more than 8 times the smaller find the numbers. Click here to see answer by scott8148(6628)

 Question 107113: From the information in the table providing values of f(x) and g(x), evaluate (f o g)^-1 (2) x 1 2 3 4 5 f(x) 3 4 5 1 2 g(x) 5 4 2 3 1 Click here to see answer by Fombitz(13828)

 Question 107499: Using the digits in 1997 and any operations, try to write equations hat have the numbers from 0-10 as the answer. Example: For 1996, a possible equation for the number zero is: 0=(9-9)/16 Click here to see answer by bucky(2189)

 Question 106645: 3x -5 Dave Click here to see answer by ineedhelp_(1)

 Question 107841: Can you please help? Simplify the radicals. the 4th root of 32p^8qr^5 What do I do first? Click here to see answer by scott8148(6628)

 Question 108780: one side is 3 and another side is 3 and then there is another side that is 5 this is a square Click here to see answer by checkley71(8403)

 Question 109218: y= x + 3 y= 4x -3 solve each system using substitution Click here to see answer by stanbon(57282)

 Question 109232: A trust account manager has \$500,000 to be invested in three different accounts. The accounts pay 8%, 10%, and 14%, respectively, and the goal is to earn \$49,000 with the amount invested at 8% equal to the sum of the other two investments. To accomplish this, assume that x dollars are invested at 8%, y dollars are invested at 10%, and z dollars are invested at 14%. a. Write an equation that describes the sum of money in the three investments. b. Write an equation that describes the total amount of money earned by the three investments. c. Write an equation that describes the relationship among the three investments. d. solve the system of equations to find how much should be invested in each accournt to satisfy the conditions. Click here to see answer by stanbon(57282)

 Question 110485: I know it says one problem per submition but this algebra question involves 2. Find Each Of The Following Products A)4x(7x-3) B)(x+4)(x+6) C)(x-3)(x+2) D)(2x+1)(2x-1) Please Help Me If You Cannot do both can you please do atleast one i would greatly appreciate you doing both they're in the same question THANK YOU!!!!! Click here to see answer by ankor@dixie-net.com(15645)

 Question 111720: State whether the system is consistent and independent, consistent and dependent, or inconsistent; x+y=4 2x-y=-7 Click here to see answer by jim_thompson5910(28536)

 Question 111719: State whether the system is consistent and independent, consistent and dependent, or inconsistent: 4x+2y=8,2x+y=1 Click here to see answer by jim_thompson5910(28536)

 Question 111723: Use substitution to solve: x=3y-2,2x+4y=16 Click here to see answer by jim_thompson5910(28536)

 Question 111721: Determine whether the system has one solution, no solution, or infinitely many solutions: y=-x+2 3x+3y=6 Click here to see answer by jim_thompson5910(28536)

 Question 111731: Use elimination to solve: 4x-y=-3 5x+2y=-20 Click here to see answer by checkley71(8403)

 Question 111728: Use elimination to solve: 3x-y=15 5x+y=9 Click here to see answer by jim_thompson5910(28536)

 Question 111739: Which of the following points are solutions to: 2x-3y<0 x+y>4 Click here to see answer by jim_thompson5910(28536)

 Question 111743: Which of the following points are solutions to: x+2y<-12 3x-y>or equal to -2 Click here to see answer by jim_thompson5910(28536)

 Question 111732: Solve the system of equations by graphing: y=x to the second power-4 y=x-2 Click here to see answer by checkley71(8403)

 Question 111744: Mr. Adams buys a bag of apples and a bag of pears for a total of \$14.00. There are eight pounds of fruit in all. The apples cost \$1.50 per pound, and the pears cost \$2.30 per pound. HOw many pounds of pears did he buy? Click here to see answer by checkley71(8403)

 Question 111742: Solve the system of equations by substitution: y=x to the second power+2x-2 y=3x+4 Click here to see answer by checkley71(8403)

 Question 111740: Use elimination to solve: x/3+4y=30 2x-y=5 Click here to see answer by ankor@dixie-net.com(15645)

 Question 111808: State whether the system is consistent and independent, consistent and dependent, or inconsistent: x+y=4 2x-y=-7 Click here to see answer by jim_thompson5910(28536)

 Question 111853: Find the value of c to make g to the second power-18g+c a perfect square. Click here to see answer by checkley71(8403)

 Question 111850: A lake is 120 fathoms deep. Use the fact that there are 6 feet in a fathom to tell the depth of the lake in feet. Click here to see answer by checkley71(8403)

 Question 111813: Find the solution of the system: y=x to the second power +5 y=2x+4 Click here to see answer by checkley71(8403)

 Question 111849: Find the domain of y=x+3 if the range is {-1,1,3,5} Click here to see answer by MathLover1(6625)

 Question 111802: Solve the system of linear equations by graphing: x+2y=5 x-y=2 Click here to see answer by WhizKid(3)

 Question 112085: State whether the system is consistent and independent,consisten and dependent,or inconsistent: 4x+2y=8 2x+y=1 Click here to see answer by stanbon(57282)

 Question 112088: Use elimination to solve: 6x-y/4=-9 3x+2y=-30 Click here to see answer by ankor@dixie-net.com(15645)

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