Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 86174: Can you please help with these problems. I need to solve for all values of x and y. I tried but my solution just didn't work.
a) 5x + 2y= 16 b) x^2-3y^2= 13
3x - 5y= -9 x-2y=1
Thank you so much for your help.
Click here to see answer by jim_thompson5910(35256)

Question 85555: Can you please help me find the solution to this problem?
-3x(x-7)(-4+11)=0
Thank you.
Click here to see answer by JonathanM(3)

Question 86200: Can you please help me with these equations?
a) Find the roots of 5 sq.rt. of x-x=6
b) Find the roots of x^2-8=17.
Thank you so much for your help.
Click here to see answer by jim_thompson5910(35256)

Question 86313: Tutor my problem is to multiply (x+2y)^4 is this 3 to the 4th power making it 19*9?? Would it be 3x3x3x3?
Thank you
Click here to see answer by stanbon(75887)

Question 86316: Tutor how do I factor this problem?
18� 24b + 15a� 20
Thanks for your help!!!
Click here to see answer by scianci(186)

Question 86278:
Tutor can you please help me Perform and simplify this problem.
6a^2-8a-8/2a^2-9a-56 divided by a-2/a-8 Thank you very much

Click here to see answer by scianci(186)

Question 86265: 378010 44
______= ____
016000 X
Click here to see answer by checkley75(3666)

Question 86328: "Your grades are 76, 90, 85 and 87. If the next grade received counts twice, what grade do you need to maintain an average of 84 in the class?"
Click here to see answer by stanbon(75887)

Question 86334: Solve each of the following equations for x, and check your results.
7(3x + 4) = 8(2x + 5) + 13
Click here to see answer by scianci(186)

Question 86336: Solve each of the following equations for x, and check your results.
3x � 5(3x � 7) = 2(x + 9) + 45
3x -15x = 2x + 63 + 35
-12x -2x = 63 - 35
-14x = 28
x=28/-14 x=-2
Click here to see answer by praseenakos@yahoo.com(507)

Question 86335: Solve each of the following equations for x, and check your results.
2(x � 3) � 3(x + 5) = 3(x � 2) � 7
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 86335: Solve each of the following equations for x, and check your results.
2(x � 3) � 3(x + 5) = 3(x � 2) � 7
Click here to see answer by praseenakos@yahoo.com(507)

Question 86392:
Can you please help me factor this expression? a⁵ + b⁵. Thank you so much for your help.

Click here to see answer by Edwin McCravy(20054)

Question 86418: Tutor: Can you help me in simplifying this problem? Thank you!!!
(-3x^2y^-3)^3(x^-3y^2)
Click here to see answer by tutorcecilia(2152)

Question 86439: Can someone help me with this equation below??
-0.52z = -0.13
Click here to see answer by tutorcecilia(2152)

Question 86440: Can someone help me:Find the perimeterand area of the rectangle

bottom:15.25
side:6.8
Click here to see answer by scianci(186)

Question 86468: Solve each of the following equations for x, and check your results.
26) 7(3x + 4) = 8(2x + 5) + 13

Click here to see answer by stanbon(75887)

Question 86473: Tutor: How do I factor by grouping: 18a^3-24a^2b+15ab^2-20b^3 and
How do I solve the following 18x^2+9x-2=0 I'm just not getting this one, I keep coming up with X=0...I'm lost!
Thank you
Click here to see answer by chitra(359)

Question 86438: Can someone please help with this question below??
8.2 = c - 4.6
Click here to see answer by checkley75(3666)

Question 86474: Could you help me please?Tutor my division is: (3x^3+4x^2-4x-6)/(x-1)
would this be 16- 8? Does x=8? thank you

Click here to see answer by ankor@dixie-net.com(22740)

Question 86606: Another very common mistake is in the equation below:
The Equation 6x � (x + 3) = 5 + 2x
First Step Solving 6x � x + 3= 5 + 2x
Write a clear explanation of what error has been made and what could be done to avoid this mistake.

Click here to see answer by stanbon(75887)

Question 86616: American Products plans to lay off 10% of its employees in its aerospace division and 15% of its employees in its agricultural division. If altogether 12% of the 3000 employees in these two divisions will be laid off, then how many employees are in each division?
the instructor wants me to learn first how to set this problem and i do not know how to do it

Click here to see answer by dolly(163)

Question 86650: If a < b, then -a > -b Why?

Click here to see answer by scott8148(6628)

Question 86646: please add the following
(8x4 � 3x2 + 6x + 1), (5x3 � 4x2 - 2x + 2) and (-2x4 + 6x - 3)
Click here to see answer by praseenakos@yahoo.com(507)

Question 86645: hi, can you please simplify (x is the letter NOT multiply)
(2x2 - 3) + (3x2 + 2x - 1) + (-2x3 - 2x2 + 2x) + (6x - 3)
Click here to see answer by praseenakos@yahoo.com(507)

Question 86746: If a dirt track car is going around an oval dirt track that is 1/4 mile long, at a lap time of 13.6 seconds, what is an average speed the car is going per lap. Or what is an equation i can use to figure out the approxiamate speed of the car.
Click here to see answer by Flake(45)

Question 86741: find the radius of the circle inscribed in the triangle bounded by the lines x-y+4=0, 7x-y-2=0 and x+y+4=0.
actually i graph the equation and prove that x-y+4 is perpendicular to the line x+y+4. got all the points of the triangle (1,5), (-4,0) and (-1/4, -3.75), got stuck with the circle thing.. could you help me please?
Click here to see answer by Edwin McCravy(20054)

Question 86813: Help Please!! 5-6(4-5^2 +6)-1
The answer is 94 but I can't come up with that answer.
Any help will be appriciated
Click here to see answer by checkley75(3666)

Question 86879: I am in need of much help. Even though I am only in year 9. I need to know the difference between an equation and an Identity. What is the difference?
thank you if you could answer my question.
Click here to see answer by ankor@dixie-net.com(22740)

Question 86916: a number divided by 3 plus 6 is equal to the same number minus 2
Click here to see answer by jim_thompson5910(35256)

Question 86931: solve and check
6(2 � x) = 4x
Click here to see answer by stanbon(75887)

Question 86848: solve and check
6x + 4(3x � 2) = 6x + 2
Click here to see answer by ankor@dixie-net.com(22740)

Question 86930: solve and check
80 = 10x
Click here to see answer by checkley75(3666)

Question 86913: please solve
x+(x*.05)=947
Click here to see answer by checkley75(3666)

Question 86845: solve and check
. 8x � 11 = 2x + 1
Click here to see answer by 303795(602)

Question 86934: solve and check 8 � (4x � 3) = 19
Click here to see answer by checkley75(3666)

Question 86990: Graph the solution set of x > 7.
Click here to see answer by stanbon(75887)

Question 86989: sovle and check
10x � 4 � 5x = 6 + 3x � 8
Click here to see answer by praseenakos@yahoo.com(507)

Question 86988: 3x � 7 = 2x + 8
Click here to see answer by praseenakos@yahoo.com(507)

Question 86836: Solve.and check
80 = 10x
Click here to see answer by praseenakos@yahoo.com(507)

Question 86837: Solve.and check
6(2 � x) = 4x
Click here to see answer by praseenakos@yahoo.com(507)

Question 86840: solve and check
8 � (4x � 3) = 19
Click here to see answer by checkley75(3666)

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