# 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 391956: a cockroach that is 1.6 inches long can move 80 inches per second. how many times your height could you move if you were a cockroach? my height is 5'1 Click here to see answer by stanbon(57346)

 Question 391960: a cockroach that is 1.6 inches long can move 80 inches per second. how many times your height could you move if you were a cockroach. my height is 5'1 Click here to see answer by stanbon(57346)

 Question 392908: my son is doing some form of algebra and i dont understand. one of the problems he had was 8x-2=-9+7x the answer is x=-7 could you explain to me how his teacher got that answer. Click here to see answer by jim_thompson5910(28595)
 Question 392908: my son is doing some form of algebra and i dont understand. one of the problems he had was 8x-2=-9+7x the answer is x=-7 could you explain to me how his teacher got that answer. Click here to see answer by MathLover1(6632)

 Question 393853: I would appreciate it if you could give me the steps to complete this equation.....[3+(-13)]+[-4+(-7)] Click here to see answer by rfer(12657)

 Question 393995: The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial A(x) that represents the area. Find A(5). Click here to see answer by richard1234(5390)

 Question 394267: -7(3-2to the 2nd)-(4+1)to the 2nd Over 17+2(4+1)-(3-4)to the 103rd Click here to see answer by MathLover1(6632)

 Question 394586: translate :the difference between seven times a number and eleven is ten. Click here to see answer by edjones(7569)

 Question 394693: In the following example what does the [ mean and why are { } used after the = sign and why is the I between the two x's. [a,oo)= {xIx > a} (there is a line under the greater than sign, I do not know what the symbol means) My name is Dolly and my email is elkm@suddenlink.net Click here to see answer by jrfrunner(365)

 Question 394767: 8-3[-2(5-7)-5(4-2)] I need the steps used to solve this algebraic expression please and thankyou. I am getting -30, but I know the answer is 26. If i can see the steps taken to solve the problem it would be much help. Thanks again. Click here to see answer by ewatrrr(10682)

 Question 396395: 2/9n-5=2+5/9n I came up with -3/9n=-3. Is that correct? Click here to see answer by solver91311(16885)

 Question 396812: is 23 a solution to x + 22 = 46? Click here to see answer by ewatrrr(10682)

 Question 397147: I need to know if i am evaluating this expression right? 9xy-4xz+3yz, x=7, y=3, and z=2 I got 151 as the answer. What I did: 9(7)(3)-4(7)(2)+3(3)(2), 9(21)-4(14)+3(6), 189-56+18=151, Click here to see answer by jim_thompson5910(28595)

 Question 397838: Evaluate the expression. 7d – 5c if d = 7 and c = 3 Click here to see answer by jim_thompson5910(28595)

 Question 400467: 9 to the negative 2nd power. Evaluate this expression Click here to see answer by algebrahouse.com(1079)

 Question 400468: -32 + 3[12 ÷ (5 - 8)] can you help Click here to see answer by algebrahouse.com(1079)
 Question 400468: -32 + 3[12 ÷ (5 - 8)] can you help Click here to see answer by unlockmath(1599)