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

Tutors Answer Your Questions about Expressions-with-variables (FREE)

Question 140460: 18/3 x 5/4 divided by 3/4
Click here to see answer by checkley77(12569)

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 140554:

32 is 16%of what number?

Click here to see answer by checkley77(12569)

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.
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Question 140668: Perform the indicated opeations.
Simplify:
-9 to the -2power
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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
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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 = _________
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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)
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Question 140818: Definition: If y is a non-zero real number, then y to the 0 power =________________.
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Question 140827: Expand by means of the distributive property:
8a(3b - c)
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Question 140823: Simplify: a - 5ab + 2a + ab + 2ab
Click here to see answer by jim_thompson5910(28598)

Question 140856: I need to solve the following
-x/5=-3
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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.)
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Question 141017: Solve:
2x + 8(x-3) = 4 - (3x +2)
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Question 141016: Solve:
(for Y) M - 3N = Y + N
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Question 141013: Evaluate
f(-2/3) if f(x) = x/2
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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?
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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)

Question 141151: Convert...
156,000 to scientific notation.
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Question 141150: The numerical coefficient of the middle term of the product of (x - 8)(x -5) equals.
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Question 141149: Use the slope-intercept methods to graph y = 5/3x - 3.
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Question 141148: Find three consecutive even integers for which 3 times the largest is twice the sum of the two smallest integers.
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Question 141141: Factor completely:
-25 + x to the second power
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Question 141140: Factor completely:
x to 2nd power + 8x - 20
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