Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 93218: I need help in solving this equation
2(x+3) = -4(x+1)
This is how I started:
2x+6 = -4x - 4
2x + 6-6 = -4x-4-6
2x = -4x - 2
2x + 4x = -4x+4x-2
6x = 2
(my answer is incorrect)
Click here to see answer by jim_thompson5910(28476)

Question 93228: Can someone please help?
-3x+4y=11
Thank you.
Click here to see answer by tutorcecilia(2152)

Question 93267: The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs.
Click here to see answer by Earlsdon(6287)

Question 93323: Logarithims
Please solve 2log(x)=log{3x/4}-1
Thanks in advance, this is not from a book.
Click here to see answer by Nate(3500)

Question 93330: Please show me how to solve the problems such as:
4r -7 = 8r + 13, 5x - 8 = 6 - 2x, t/5 - 7 + 31 = 8(6-4), and
9-5(4-3) = -16 x/3 ("x over 3" and "t over 5 ").
Thank you.

Click here to see answer by jim_thompson5910(28476)

Question 93386: Evaluate. 5 · 4 ÷ 2 – 42
Click here to see answer by checkley75(3666)

Question 93385: Write the following phrase using symbols. The quotient of p minus q, divided by 5
Click here to see answer by checkley75(3666)

Question 93379: solve the following
13m-17=6m+25
Click here to see answer by checkley75(3666)

Question 93469: stan has 52 quarters and nickels combined. if he has three times as many nickels as quarters, how much money does he have?
Click here to see answer by stanbon(57203)

Question 93469: stan has 52 quarters and nickels combined. if he has three times as many nickels as quarters, how much money does he have?
Click here to see answer by checkley75(3666)

Question 93378: solve the following
3m=7m+32
Click here to see answer by checkley75(3666)

Question 93494: 4x+2+5x
Click here to see answer by checkley75(3666)

Question 93568: I am having a hard time understanding the following equation;
(-2)(4)+5-6-[-2]
________________= ?
(-2)[9+(-5)]
What are the [] brackets used for in the equation? This is one equation.
thanks........
Click here to see answer by checkley75(3666)

Question 93577: What is the simpliest form of: (9-b^2)/(b^2-b-6)
Click here to see answer by Earlsdon(6287)

Question 93642: 23 less than x (I don't understand the concept)
the sum of 13 and twice a number (?)
Click here to see answer by tutorcecilia(2152)

Question 93701: solve algebraically
2x^3-x^2-18x+9=0
Click here to see answer by stanbon(57203)

Question 93709: the product of nine and the quanity 5 more than a number tis less than 6

Click here to see answer by bucky(2189)

Question 93709: the product of nine and the quanity 5 more than a number tis less than 6

Click here to see answer by praseenakos@yahoo.com(507)

Question 93666: Could someone please help me with this problem?
Part A.. Solve A=P+Prt for P if r=0.07, t=3, A=4646.40

Part B.. Solve A=1/2h(a+b)for b if a=3.2, h=12, A=51.6
Thank you for your help!!!!!!
Click here to see answer by jayanthihemkos@yahoo.com(87)

Question 93792: 3x=5 - (7x - 7)
Click here to see answer by jim_thompson5910(28476)

Question 93834: I need help finding the answer to this equation:
5/3(y+2)=1/2-y
This is a review question is my college math class 153 and I haven't taken a math class in over a year and a half and I'm lost. In the back of the book it says the answer is -17/16 but I've done the problem over 10 times and searched and could not find how they got -17/16 for the answer.
Please help!
Click here to see answer by checkley75(3666)

Question 93838: I need to solve this with a equation.
A student takes a test where two points are given for every correct answer and 3 points are deducted for every wrong answer. If the student scores 40 points on a 30-question test, how many questions did she answer correctly?
Click here to see answer by checkley75(3666)

Question 93837: If a and b are not equal, but ax=bx is a true statement, then find the numerical value of 2x (a+b).

Click here to see answer by jim_thompson5910(28476)

Question 93837: If a and b are not equal, but ax=bx is a true statement, then find the numerical value of 2x (a+b).

Click here to see answer by stanbon(57203)

Question 93836: I need to solve this with a equation.
The sport shop sells bicycles and tricycles and often has a selction of them sitting out for customers to try. While I was looking around, my son counted 70 wheels and 29 handlebars. How many bicycles and how many tricyles were there?
Click here to see answer by scott8148(6628)

Question 93848: Solve the following equation for X. These are fractions I just do not know how to type this. X-3 over 4 - X-1 over 9 = X-5 over 6.( X = ?). Thank you. Dave
X-3 - X-1 = X-5
___ ___ ___
4 9 6
Click here to see answer by jim_thompson5910(28476)

Question 93850: I have to solve this with a equation. Thanks!
Five stones together weigh 24 pounds. The middle one weighs 4 times as much as the smallest. The largest weighs 3 times as much as the second smallest. The second smallest weighs 3 times as much as the smallest. The fourth smallest weighs as much as the second and third smallest together. How much does each stone weigh?
Click here to see answer by ankor@dixie-net.com(15622)

Question 93882: I have a lot of trouble with word problems. Can someone help?
Beans sell for $9.00 a pound and $12.00 per pound. The two types need to be mixed to create a 100 pound mixture that sells for $11.25 per pound. How much of each bean should be used?
Thank you.
Click here to see answer by checkley75(3666)

Question 93884: I am stuck on this problem. Please help?
Find values for m and b so that the solution can be (-3,4).
5x+7y=b
mx+y=22
Click here to see answer by praseenakos@yahoo.com(507)

Question 93884: I am stuck on this problem. Please help?
Find values for m and b so that the solution can be (-3,4).
5x+7y=b
mx+y=22
Click here to see answer by Edwin McCravy(8879)

Question 93893: I am having a lot of trouble. Can somebody please help me?
A small firm produces both am and am/fm car radios. The am radios take 15 hours to produce and the am/fm radios take 20 hours. The number of production hours is limited to 300 hours a week. The capacity is limited to a total of 18 radios per week and existing order require that at least 4 am radios and 3 am/fm radios be produced per week. Write system of inequalities representing the situation. Draw a graph of the feasible region given this conditions, in which x is the number of am and y is the number of am/fm radios.
Thanks
Click here to see answer by ankor@dixie-net.com(15622)

Question 93897: I am stuck on how to solve by substitution. Can someone please help me?
10x+2y=7
y=-5x+3
Click here to see answer by ankor@dixie-net.com(15622)

Question 93896: Can somebody please help me?
Solve by substitution.
8x-4y=16
y=2x-4
Thanks
Click here to see answer by checkley75(3666)

Question 94009: 1. 0.2(x+3)-4(2x-3)=3.4

2. x/2+ x/5+ x/3=31

Click here to see answer by checkley75(3666)

Question 94012: Q: 4 divided by 4 + square root of 14
I'm not sure where to start.
Click here to see answer by ankor@dixie-net.com(15622)

Question 94043: The total length of rope in feet used to put up tents is 60 times the number of tents. Please provide the algebra equation. Thank you!
Click here to see answer by Nate(3500)

Question 94042: I am having trouble with solving by substitution. Please help.
5x-2y=-5
y-5x=3
Click here to see answer by praseenakos@yahoo.com(507)

Question 94084: I need help with this problem.

2x+3 x
----=--
3a-y 2y

in other words, two x plus three over three a minus y equals x over two y

Click here to see answer by praseenakos@yahoo.com(507)

Question 94041: Would someone be able to help me with this problem?
x+5y=10
-2x-10y=-20
Solve by addition.
Click here to see answer by elizaldecalaunan(5)

Question 94016: Solve for y:
1 divided by y+1 + a = 3 divided by y+1
Click here to see answer by elizaldecalaunan(5)

Question 94168: can anyone please help me solve this???
12x^2 + 7x = 10
Click here to see answer by checkley75(3666)

Question 94166: please help me sovle this equation
x^3 + 5x^2 = 6x
Click here to see answer by checkley75(3666)

Question 94194: Please Solve using the quadratic formula?? someone plesae help i dont even know what the quadratic formula is!!! 5x^2 - 3x - 3 = 0
Click here to see answer by stanbon(57203)

Question 94194: Please Solve using the quadratic formula?? someone plesae help i dont even know what the quadratic formula is!!! 5x^2 - 3x - 3 = 0
Click here to see answer by ankor@dixie-net.com(15622)

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