Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 484865: Hello, I have a question about equations of lines. The question is to find the slope of a line that is parallel to the line 5x-7y=28
Thank you so much for the help.
-Kaitlin
Click here to see answer by Alan3354(69443)

Question 484780: The sum of two numbers is 66. The larger number is three less than twice the
smaller number. Find the numbers.
Click here to see answer by deborabr(181)

Question 484904: How would I find the domain for this problem: Find the domain of the expression by finding the intervals on the real number line for which the radicand is nonnegative. √(2x-10)
Click here to see answer by jim_thompson5910(35256)

Question 484936: The homework question is "The purchase of a bicycle, which includes 7% tax, is $374.50. What is the number of dollars in the price before tax is added?" I have tried to solve this by writing out an equation: x+(.07(x))=374.5. I have no idea where to start to solve this equation, or if I'm even going about the problem correctly. How can I find 7% of the original price, add it too the original price, and come out with $374.50?
Click here to see answer by stanbon(75887)

Question 484938: 5n^3 when n =-2
(-2a)^3 when a = 3
Click here to see answer by Tatiana_Stebko(1539)

Question 484988: What is 7% of 14
Click here to see answer by Tatiana_Stebko(1539)

Question 485197: Angles X and Y are complementary. If mX = a � 12 and mY = a + 8, find the measure of mX. Please help me, I am doing pre-algebra and my teacher is very strict. This is yesterday's "problem of the day" and almost everybody got it.
Is the answer 70? Please respond with haste.
Thanks
Click here to see answer by mananth(16946)

Question 485280: Write the equation of a line in slope-intercept form that is parallel to the line y= 7/8x-7 and containing point (8, 0).
Click here to see answer by lwsshak3(11628)

Question 485311: translate in an equation p$5bags of popcorn and $4 sodas total $60. Graph the equation and use the graph to determine 3 different combinations of bags of popcorn and sodas that cost $60.
Click here to see answer by mananth(16946)

Question 485371: How do you solve this equation? Is it possible? : 5√(x)-√(x-1)=6
Click here to see answer by Alan3354(69443)

Question 485432: 5 + 8 * 9^2 - 25+5=633
How did I arrive at this solution?
where do parenthesis go?
Click here to see answer by chessace(471)

Question 485457: what is 13=5+3b-13?

Click here to see answer by deborabr(181)

Question 485546: I need to solve this problem and the show the set builder notations.
This is what I've done so far:
x -4 < 1/8
x + 4 < 1/8 + 4
What am I doing wrong?
Click here to see answer by John10(297)

Question 485570: , where x= -1
I have tried and tried, but keep getting a solution of 1 or more exactly (3/3). The back of my textbook gives an answer of (3/2). I just don't see how.
Click here to see answer by nerdybill(7384)

Question 485589: How do you solve 3x=-x^2+8
Click here to see answer by jorel1380(3719)

Question 485589: How do you solve 3x=-x^2+8
Click here to see answer by deborabr(181)

Question 485610: I am trying to help my son with his algebra and need some help! I have two I am stuck on can you please help. I need an equation to model and solve. Below are the questions.
1) Attendance at a ball game was 400 people. Student tickets cost $2 and adult tickets $3. $1050 was collected in ticket sales, how many of each were sold.
2) Find two consecutive integers such that the sum of the first and three times the second is 55.
Thank you,
Dwayne
Click here to see answer by Alan3354(69443)

Question 485699: Pn = r + si/f
f=?

Click here to see answer by solver91311(24713)

Question 485704: Can you please solve this equation. u/5+u/10-u/6=1
Click here to see answer by MathLover1(20849)

Question 485764: How do I solve 9 + 2.7t = -4.8t -6? and 1/2 which is a fraction 1/2(5y+8)=4y-5?
Click here to see answer by ankor@dixie-net.com(22740)

Question 485785: alegbra equations find n
1,2,9,9,10,11,n
range:13
median:9
mode:9
mean:8
Click here to see answer by Edwin McCravy(20054)

Question 485841: what is the first step for 3k-5=7k-21?
please!!!!!!
explain the steps and clearly explain why do you have to do those steps: not, to get the ansmers. please explain, i am in 7th grade doing algerbra 1.
I have trouble doing multi-step equation. If that is one of the eastiest things in algerba 1 should i go to pre-algerbra? Its hard to do multi-step equations with both variables in both sides.
Click here to see answer by rfer(16322)

Question 485735: 1/a=1/b+1/c
find b
I GOT AC/A+C

Click here to see answer by richard1234(7193)

Question 485719: Create an algebraic equation using only multiplicaton and division where x=-3, y=-2, z=-1 and the answer is -16.
Click here to see answer by richard1234(7193)

Question 485714: x+y=450
x-20=2y
Click here to see answer by stfuenaira(10)

Question 486080: Solve each of the following equations for X. if the answer is not an integer, then express the answer as a fraction in reduced form.
-5(3x - 10) - 10x + 7 (-4x -3) = -42
Click here to see answer by Tatiana_Stebko(1539)

Question 486129: 1. A basketball has a radius of 12.5 inches. What would be the volume of the basketball?

Click here to see answer by chessace(471)

Question 486130: 2. Find the total cost of a sofa if the ticket price was $950 and the furniture store set up a simple interest loan for 2 years with an interest rate of 6.5%.

Click here to see answer by rfer(16322)

Question 486188: Using 7,1,5,8 Equals 24 ?

Click here to see answer by chessace(471)

Question 486213: this is the equations by substitution.
9x-8y=10
y=-x+3
what is the solution?
Click here to see answer by mananth(16946)

Question 486307: substitute equations
x=-4y-2
3x-y=20
what is the solution?
Click here to see answer by Jstrasner(112)

Question 486335: how do you solve x^3+3x^2-25x-75
Click here to see answer by Tatiana_Stebko(1539)

Question 486328: (7+x)/(7)+(x+6)/(4)=4x+1
Click here to see answer by Tatiana_Stebko(1539)

Question 486325: How do you answer 0=0 or 1=1? I do not think it is "no solution". Is it "All available"?
Problem:
m-1=m-1 --->0=0 Answer is all available?
Click here to see answer by Tatiana_Stebko(1539)

Question 486305: this is a substitute equation question.
x=-4y-2
3x-y=20
what is the solution?
Click here to see answer by Tatiana_Stebko(1539)

Question 163683: seven more than the quotient of a number and 5 is the same as 42
i need to write it as an expression and solve it
Click here to see answer by Theo(13342)

Question 486489: Solve for T in the following equation
T = v^2p^3/c
I don't have a clue...
Click here to see answer by jim_thompson5910(35256)

Question 486584: Multiply. Try to recognize the type of product before multiplying.
(2x − 1)2

I need help please..

Click here to see answer by MathLover1(20849)

Question 486584: Multiply. Try to recognize the type of product before multiplying.
(2x − 1)2

I need help please..

Click here to see answer by deborabr(181)

Question 486587: I don't understand this at all, some help would be appreciated..
(x − 0.8)(x − 0.5) [4.6]
Click here to see answer by chessace(471)

Question 486693: solve for x: ax+3by=2az-5bx
Click here to see answer by Tatiana_Stebko(1539)

Question 486712: i need help in this equation -3(1+6r)=14-r (solving multi-step)
Click here to see answer by Tatiana_Stebko(1539)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580