# Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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 Algebra: Evaluation of expressions, parentheses Solvers Lessons Answers archive Quiz In Depth

 Question 122597: How would I combine the like terms? 9u+6v-10u Click here to see answer by jim_thompson5910(28476)

 Question 122978: My professor wants us to use order of operations to get the answer, im not sure if im doing it correct, for this expression i got -8 but not sure if it's right please can someone help thank you. -8-3(+3) Click here to see answer by checkley71(8403)

 Question 123379: Please solve: n+2(7+3n)-3n which has the same value: 2(7+n) n+14 14+3n 2(7+2n) 21n-3n my answer is 2(7+2n) which will work out to be: 4n+14. is this correct? thanks. Click here to see answer by MathLover1(6613)

 Question 123380: Please solve: The sum of a number (x) and 12 is multiplied by 10 then increases 15, which numerical expressions represent this statment, follow by the correct answer, if x=3. 1) (x+12*10)+15;138 2) x+(12*10)+15;165 3) (10x+12)+15;57 4) x+12*10+15;138 5) (x+12)10+15; 165 I chosen the answer number 5, Is this correct? thanks, Click here to see answer by praseenakos@yahoo.com(507)

 Question 123921: How do I write 243 in exponential notation Click here to see answer by checkley71(8403)

 Question 124246: A rectangle has sides of 3x – 4 and 7x + 10. Find the expression that represents its perimeter. Click here to see answer by solver91311(16868)
 Question 124246: A rectangle has sides of 3x – 4 and 7x + 10. Find the expression that represents its perimeter. Click here to see answer by MathLover1(6613)

 Question 124342: (Nine more than the product 4 and the number is 73). I am helping my niece and I am stumped, Help..... Click here to see answer by bucky(2189)

 Question 124705: The area of a square is 25 square meters. What is its perimeter? Click here to see answer by checkley71(8403)

 Question 124707: A concrete driveway measures 18 yards by 4 yards. The driveway will be 0.5 yards thick. (a) How many cubic yards of concrete will be needed? (b) How much will it cost if concrete is \$3.50 per cubic yard? Click here to see answer by checkley71(8403)

 Question 124973: how step by step I can simplify this example (2a)(5a)(6a) Click here to see answer by chitra(359)

 Question 125062: I am trying to write this without parentheses Click here to see answer by checkley71(8403)

 Question 125110: PLEASE HELP The lenght of a rectangle is 1ft more then twice its width, and the area of the rectangle is 45ft^2. I am trying to find the diensions of the rectangle. Length _____ft Width _____ft THANK YOU IN ADVANCE Click here to see answer by checkley71(8403)

 Question 125678: I am stuck with this one : Q. Express in index form 1 divided by the square root of x Q. Express in index form the square root to the power of 4 of x to the power of 5 Click here to see answer by solver91311(16868)

 Question 125714: how to write a numerical expression for the phrase and simplify it 13 less than the difference between 8 and -5 is what? Click here to see answer by stanbon(57216)

 Question 125952: I'm very confused on how to work this D=RT problem. The problem is as follows "A bus leaves Miami for San Francisco traveling at a rate of 40 mph. Three hours later a car leaves Miami for San Francisco traveling at 55 mph. How far from Miama does the car overtake the bus? My formula: 40x+55(x-3)=x 40x+55x-165=x 95x-165=x I know this cannot be right, please help.. Click here to see answer by josmiceli(9647)

 Question 125960: If the sides of a square are decreased by 2, then the area is decreased by 36. what were the dimensions of the original square? Click here to see answer by MathLover1(6613)

 Question 126173: I have this expression square root of -144 which would be 12 12 break it out further it would be -3*4 and -3*4 so than it would be -4 square root 3? These kind of problems play with your head. Is this correct? Click here to see answer by stanbon(57216)

 Question 126398: What is the difference in parentheses versus brackets and when do you use each with regards to interval notation? Click here to see answer by ilana(307)
 Question 126398: What is the difference in parentheses versus brackets and when do you use each with regards to interval notation? Click here to see answer by stanbon(57216)

 Question 126809: Can you help me solve this problem? 8+5 --- t Click here to see answer by stanbon(57216)

 Question 127004: find three consecutive integers such that 3 times the sqaure of the first exceeds the product of the other two by 25 Click here to see answer by solver91311(16868)

 Question 127593: If y(x-1)=z then x= NEED SOME ASSISTANCE, THANKS Click here to see answer by josmiceli(9647)