# 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 140466: Simplify -/-3 +4/ + 5 - 7 = Click here to see answer by ttlpkg32(2)

 Question 140463: Perform the indicated operations. Write fractional answers as mixed numbers or as proper fractions reduced to lowest terms. 0.096492 diveded by 1.72 = Click here to see answer by stanbon(57387)

 Question 140546: Trying to help out young friend, I have been out of school for 25yrs and not sure if I am on the right path, young man is going to fail math and really needs help: If y=x-2, find x in 4x+3y+78 This is what I got but not sure: 4x+3y=78 4(y-3)+3y=78 4y-6+3y=78 7y-6+6=78+6 7y=84 y=12 am I way of? Can't figure out how to get x+? Please help, Thank you. Click here to see answer by checkley77(12569)

 Question 140670: Factor 80 into a product of prime factors. Click here to see answer by stanbon(57387)

 Question 140669: Write the conversion of 30 square yards to square inches using four unit multipliers. Click here to see answer by stanbon(57387)

 Question 140668: Perform the indicated opeations. Simplify: -9 to the -2power Click here to see answer by stanbon(57387)

 Question 140667: Perform the indicated operations. Simplify: -3 to the 2nd power + (-2) to the second power. Click here to see answer by checkley77(12569)
 Question 140667: Perform the indicated operations. Simplify: -3 to the 2nd power + (-2) to the second power. Click here to see answer by praseenakos@yahoo.com(507)

 Question 140666: Evaluate cd(d to the 2nd power - c) if d = -1 and c=2 Click here to see answer by checkley77(12569)
 Question 140666: Evaluate cd(d to the 2nd power - c) if d = -1 and c=2 Click here to see answer by praseenakos@yahoo.com(507)

 Question 140659: Definition: If m is any real number, then m to the first power = _________ Click here to see answer by praseenakos@yahoo.com(507)

 Question 140661: Write the algebraic expression that coresponds to five times the difference of a number and 12.________________. Click here to see answer by checkley77(12569)
 Question 140661: Write the algebraic expression that coresponds to five times the difference of a number and 12.________________. Click here to see answer by praseenakos@yahoo.com(507)

 Question 140819: Write the algebraic expression that corresponds to the opposite of a number.______________ Click here to see answer by stanbon(57387)

 Question 140828: Expand by means of the distributive property: 3x to the 2nd power (2xy + 4y to the 3rd power) Click here to see answer by stanbon(57387)

 Question 140818: Definition: If y is a non-zero real number, then y to the 0 power =________________. Click here to see answer by stanbon(57387)

 Question 140827: Expand by means of the distributive property: 8a(3b - c) Click here to see answer by rapaljer(4667)

 Question 140823: Simplify: a - 5ab + 2a + ab + 2ab Click here to see answer by jim_thompson5910(28598)

 Question 140824: Simplify (factor if necessary): 9b to the 2nd power c + 6c _____________________________ 3c Click here to see answer by solver91311(16897)

 Question 140887: When substituting for a variable in a function graph, how do I select the correct substitution for the variable. Example: f(x)=-7(x) When making a graph, I am not sure how to get the input, and output. Click here to see answer by stanbon(57387)

 Question 140817: The equation X + 5 = 8 is only true when x is equal to _________. Therefore, the equation is called a/an _____________equation. Click here to see answer by rapaljer(4667)

 Question 141019: The average of the first two of Bob's Algebra 1 test scores was 90, and his average for the last five was 82. What was Bob's overall average? Click here to see answer by checkley77(12569)

 Question 141018: Solve: (2x - y = 10 (x + 3y = -9 (Use substitution.) Click here to see answer by checkley77(12569)

 Question 141017: Solve: 2x + 8(x-3) = 4 - (3x +2) Click here to see answer by checkley77(12569)

 Question 141016: Solve: (for Y) M - 3N = Y + N Click here to see answer by checkley77(12569)

 Question 141012: The ratio of Flims to Flams was 5 to 8. If a total of 156 were present, how many of them were Flams? Click here to see answer by checkley77(12569)

 Question 141015: In three weeks, Jeremy will receive 15% raise which will bring his yearly salary to \$25,300. What is Jeremy earning now? Include a diagram in your solution. Click here to see answer by stanbon(57387)

 Question 141038: how to get the mean,median,mode and range?????? thanxxz soooooo much 4 ur time and help!?!?!?!?!? Click here to see answer by stanbon(57387)
 Question 141038: how to get the mean,median,mode and range?????? thanxxz soooooo much 4 ur time and help!?!?!?!?!? Click here to see answer by Edwin McCravy(8909)

 Question 141020: Graph in the rectangle coordinate systems provided x - 2y = 6 Click here to see answer by jim_thompson5910(28598)

 Question 140822: Product Rule for exponents: If c, d, and w are real numbers and w not equal to 0, then w to the c power 2 to the d power = _________________. Click here to see answer by Edwin McCravy(8909)

 Question 140657: Definition: If y is a non-zero real number, then y to the 0 power = ________ Click here to see answer by nabla(475)

 Question 141021: Graph in the rectangular coordinate systems provided. 3x = 15 Click here to see answer by rapaljer(4667)

 Question 141093: Find 2 numbers such that their sum, their difference, and their product have the ratio 3:2:5. Click here to see answer by ankor@dixie-net.com(15660)

 Question 141147: A tsunami destroyed 4/5 of a forest. If 10,800 trees were lost, how many trees survied? Include a diagram. Click here to see answer by checkley77(12569)