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

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

Question 179020: substitute,
x=2y+8
7x+y=101
Click here to see answer by checkley75(3666)

Question 179047: we are solving the x and y values of the linear equations using the substitution method
im stuck
0.5x-2y=17
2x+y=104
can you help me solve the x nd y values
Click here to see answer by josmiceli(9671)

Question 179073: solve each algebraically. Identify each system as consistent and dependent, consistent and independent, or inconsistent.
{x-5y=10
{-54=-x+6
Click here to see answer by HyperBrain(694)

Question 179112: x^2+18x+14=(x+a)^2+b
where a and b are numbers, then, a=? b=?
Click here to see answer by solver91311(16877)

Question 179117: solve if it is an equation if not, simplify it. thank you.
26) (x + 3)^-1/3 = -1
24) 25^3/2 =
(square root) 22) x = SR(1-8x) + 2
Click here to see answer by stanbon(57323)

Question 179117: solve if it is an equation if not, simplify it. thank you.
26) (x + 3)^-1/3 = -1
24) 25^3/2 =
(square root) 22) x = SR(1-8x) + 2
Click here to see answer by solver91311(16877)

Question 179124: I was wondering how to show my work on a problem when x-11=5x+15
Click here to see answer by edjones(7569)

Question 179124: I was wondering how to show my work on a problem when x-11=5x+15
Click here to see answer by Mathtut(3670)

Question 179115: (6)/(x-2)+(7)/(x-7)=(7)/(x^2-9x+14)
Click here to see answer by edjones(7569)

Question 179165: can you please help me express irrational solutions in simplest radical form: (((x^2=225)))
Click here to see answer by Mathtut(3670)

Question 179169: can you please help me express irrational solutions in simplest radical form: (((3n^2-75=0)))
Click here to see answer by Mathtut(3670)

Question 179168: can you please help me express irrational solutions in simplest radical form: (((a^2-64=0)))
Click here to see answer by Mathtut(3670)

Question 179166: can you please help me express irrational solutions in simplest radical form: (((x^2= -225)))
Click here to see answer by Mathtut(3670)

Question 179164: can you please help me write the following in exponential form: (((^3 square root signx^2y^3)))
Click here to see answer by Mathtut(3670)

Question 179163: can you please help me write the following in exponential form: (((^4 square root sign2)))
Click here to see answer by Mathtut(3670)

Question 179163: can you please help me write the following in exponential form: (((^4 square root sign2)))
Click here to see answer by jim_thompson5910(28593)

Question 179212: Find s and w.
(s-w)27=540
(s+w)15=540
Click here to see answer by checkley75(3666)

Question 179365: can you please help me the express irrational solution in simplest radical form of: (((n^2-6=0)))
Click here to see answer by solver91311(16877)

Question 179367: can you please help me complete the square of: (((x^2+12x+____)))
Click here to see answer by stanbon(57323)

Question 179369: can you please help me solve by completing the square of:(((x^2-6x=16)))
Click here to see answer by stanbon(57323)

Question 179368: can you please help me complete the square of: (((x^2-6x+___)))
Click here to see answer by solver91311(16877)

Question 179366: can you please help me the express irrational solution in simplest radical form of: ((( (n-5)^2=20)))
Click here to see answer by solver91311(16877)

Question 179371: can you please help me solve by completing the square of: ((( x^2-x-1=0)))
Click here to see answer by Mathtut(3670)

Question 179370: can you please help me solve by completing the square of: (((2x^2-3x+1=0)))
Click here to see answer by Mathtut(3670)

Question 179462: Which numbers cannot be used in place of the variable in each
rational expression? a^2 - b^2/ a - b
Click here to see answer by stanbon(57323)

Question 179552: Don was setting up two aquariums in his new office.At the pet store,salt water fish were priced ar $2 each and fresh water fish were priced at $3 each.He bought some of each kind and paid $31 for a total of 13 fish.How many freah water fish did he buy?
Click here to see answer by nerdybill(6958)

Question 179558: find three consecutive intergers such that the sum of twice the first and 4 times the second is equal to 20 more than twice the third
Click here to see answer by checkley77(12569)

Question 179574: I know this is probably really easy, but I am stuck. I'd appreciate any help you can offer.
Rewrite the following expression with positive exponents:
(37xy)^-6/7
Click here to see answer by jim_thompson5910(28593)

Question 179603: Amelia's parents and grandparents have both opened savings accounts to save for Amelia's education. This year, Amelia's parents' savings account earned 5% interest and her grandparent's account earned 8% interest. This year, the two savings accounts have earned a total of $460 in interest. At the beginning of the year, the two accounts were worth a total of $6500. Determine the current value of both saving accounts. Show all work necessary to justify your answer.
I am not sure how to break down this problem in order to get the answer. I realize it is two parts.
a+b=$460
x+y=$6960

Click here to see answer by stanbon(57323)

Question 179613: Find 8b(1.7f)
Click here to see answer by Mathtut(3670)

Question 179692: 118. Solve if it has a solution SR(x – 2) + 5 = 1
129. Simplify 64^(2/3)

Click here to see answer by edjones(7569)

Question 179734: can you please help me solve and leave answer in simplest radical form: (((3x^2=2x+5)))
Click here to see answer by solver91311(16877)

Question 179726: can you please help me complete the square of: (((x^2-6x+___)))
Click here to see answer by solver91311(16877)

Question 179730: can you please help me use the quadratic formula to solve the following and leave irrational roots in the simplest radical form: (((2x^2-3x+1=0)))
Click here to see answer by Mathtut(3670)

Question 179727: can you please help me express irrational solutions in simplest radical form of: (((n^2-6=0)))
Click here to see answer by Mathtut(3670)

Question 179728: can you please help me use the quadratic formula to solve the following and leave irrational roots in the simplest radical form: (((3x^2-4x-5=0)))
Click here to see answer by Mathtut(3670)

Question 179832: My Problem Is:
Y=2x+3
Y=4x-1
My teacher taught me today, but I left her room not understanding how to work this problem out. I'm not sure if they both start with "y" if the formula is the same or not. How do I do this problem?
Click here to see answer by stanbon(57323)

Question 179934: Simplify 9k-4+2k.
Click here to see answer by Mathtut(3670)

Question 179933: To divide 7/x+2 by x-2/14, you can multiply 7/x+2 by:
Click here to see answer by Mathtut(3670)

Question 180044: Solve:
2and 1/2 + 3 and 1/16k + 1/8= 0
solve for k

Click here to see answer by Mathtut(3670)

Question 180151: I would like to know how to solve this problem. I don't want the answer, just the steps I need to use.
Stephan cuts a 20-yard ribbon. One piece is 3-yards longer than the other. What is the length of each rope?
Click here to see answer by Alan3354(30993)

Question 180150: Reduce to lowest terms the fraction: 3xy -5x / 2x -3xy.
Click here to see answer by eperette(173)

Question 180150: Reduce to lowest terms the fraction: 3xy -5x / 2x -3xy.
Click here to see answer by checkley77(12569)

Question 180149: Reduce to lowest terms the fraction: 3xy -5x / 2x -3xy.
Click here to see answer by checkley77(12569)

Question 180148: For what value is the fraction : 15 -x / x+1 undefined?
Click here to see answer by eperette(173)

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