Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 1045735: What is the solution of: 2n-3(4n+5)=-6(n-3)-1
Click here to see answer by MathLover1(20849)

Question 1045730: I don't know how to write an equation for this: Shirley is going to have the exterior of her home painted. Tim's Painting charges $250 plus $14 an hour. Colorful Paints charges $22 per hour. How many hours would the job need to take for Tim's Painting to be the better deal?
I'm pretty sure the answer is 32 hours. I just don't know how to write an equation showing my answer.
There is another 1 that I don't know how to do at all.
Tracey is looking at different travel agencies to plan her vacation. ABC Travel offers a plane ticket for $295 and a rental car for $39 per day. M&N Travel offers a plane ticket for $350 and a rental car for $33 per day. What is the minimum number of days that Shirley's vacation should be for M&N Travel to have the better deal?
I have no idea how to answer this or write the equation.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1045814: 3x + 12 = 5x + 2 what is x
Click here to see answer by Alan3354(69443)

Question 1045829: Please help. If r=3z,15z=20x, and 10x=2y, then r=?
Click here to see answer by ikleyn(52776)

Question 1045829: Please help. If r=3z,15z=20x, and 10x=2y, then r=?
Click here to see answer by Alan3354(69443)

Question 1045861: The sum of a number and 9 is multiplied by -2 and the answer is 8
Click here to see answer by Alan3354(69443)

Question 1045906: what does it mean for an ordered pair to be a solution to an equation
Click here to see answer by josgarithmetic(39616)

Question 1045909: Hey cars odometer read 36,392 miles at the start of a trip and 36,686 miles at the end of the trip. If the trip took six hours, what was the drivers average speed and miles per hour?
Click here to see answer by solver91311(24713)

Question 1045889: A cars odometer read 36,392 miles at the start of a trip and 36,686 miles at the end of the trip. It's the trip took six hours what was the drivers average speed and miles per hour?
Click here to see answer by solver91311(24713)

Question 1045882: Mo is thinking of a number. Eleven more than one third of the number is -1. Find Mo's number.
Click here to see answer by MathLover1(20849)

Question 1045949: Solve the equation: 4(2+x)+1=7x-3(x-2)
Click here to see answer by MathLover1(20849)

Question 1045942: Subtract -6 from the quotient of -24 and-3
Click here to see answer by ewatrrr(24785)

Question 1045942: Subtract -6 from the quotient of -24 and-3
Click here to see answer by ikleyn(52776)

Question 1045890: A woman had $1270 in her checking account. She deposited $180 and wrote checks for $25 and $110. She then wrote a check for $45 and deposited $150. How much did she finally have in her account? Write as an addition expression using integers.
Click here to see answer by jorel555(1290)

Question 1046100: 10X^2-bx-8=0
6x^2-ax-3=0
Eliminate x
Click here to see answer by josgarithmetic(39616)

Question 1046166: a = 2+ sqare root of 3. to find a^2 +1/a^2
Click here to see answer by ikleyn(52776)

Question 1046176: X-2�5=30
Click here to see answer by Alan3354(69443)

Question 1046172: A boat travelled at a certain speed to a jetty 30 km away, then reduced speed by 4km/hr and returned to its starting
point.
If the boat had travelled at a steady and constant speed of 8km/hr for the entire trip, the total time would have been
half an hour less.
Determine the initial speed of the boat.
Click here to see answer by jorel555(1290)

Question 1046262: In my purse I have 21 coins, all of which are either 5-cent or 20-cent coins. Their total value is $2.25.
How many 20-cent coins do I have?
Click here to see answer by ikleyn(52776)

Question 1046325: what is the equation in slope-intercept form
Slope 7:y-intercept(0,7/9)
Click here to see answer by ewatrrr(24785)

Question 1046331: Lucy is taken for tests in math class and has an average of 85.
a. What's score would you have to get on her fifth test to have an average of 88?
b. Can she get an average of 90? Explain.
Click here to see answer by jorel555(1290)

Question 1046328: Take a look at the following sums:
1=1
1+3=4
1+3+5=9
1+3+5+7=16
1+3+5+7+9=25
a. Come up with a conjecture about the sum when you add the first n odd numbers. For example when you added the first five odd numbers ( 1+3+5+7+9) what do you get? What if I wanted to add the first 10 odd numbers? Or 100?
b. Can you think of a geometric interpretation of this pattern? If you start with one square and add on three more, what can you make? If you now have four squares and you add on five more, what can you make?
c. Is there a similar pattern for adding the first n even numbers?
2=2
2+4=6
2+4+6=12
2+4+6+8= 20
Click here to see answer by ikleyn(52776)

Question 1046361: 3x^4(2x+5x^3+2x-6)
Click here to see answer by solver91311(24713)

Question 1046403: x+y-2z=5
x +2=4
y -z=6
Click here to see answer by t0hierry(194)

Question 1046409: If x^x+y^y=31 so find the valvu of x+y=?
Click here to see answer by Alan3354(69443)

Question 1046508: The product of three consecutive integers is 185136. What is the sum of these integers?
Click here to see answer by MathLover1(20849)

Question 1046508: The product of three consecutive integers is 185136. What is the sum of these integers?
Click here to see answer by ikleyn(52776)

Question 1046524: Six times a number divided by 7 equals 18
Click here to see answer by MathLover1(20849)

Question 1046614: simplify29/12-15/8*6/5
Click here to see answer by Alan3354(69443)

Question 1046619: twice the sum of a number and 5 is equal to three times the diffrence of the number and 7
Click here to see answer by ewatrrr(24785)

Question 1046615: For each of the following write an equation that models the situation.
The angle sum of a polygon with n sides is 180 degrees times two less than the number of sides. Let a = angle sum and n= the number of sides in the polygon.
Click here to see answer by ikleyn(52776)

Question 1046668: Evalute the following limit
(xtan(4x))
lim x->(pi/16)+
Click here to see answer by richard1234(7193)

Question 1046691: What is 4/3c - 3/2 = 8? with directions on how to do it please
Click here to see answer by stanbon(75887)

Question 1046711: Find three consecutive integers whose sum is -12.
Click here to see answer by josmiceli(19441)

Question 1046702: -3;2a+5=-1
Click here to see answer by ikleyn(52776)

Question 1046677: One gram of fat contains 9 calories, and one gram of protein contains 4
calories. If one serving of a food contains 170 calories and has 6 grams of
protein, which equation can be used to find the number of grams of fat, x, in
the serving?
A. 6x + 36 =170
B. 9x + 24 =170
C. 7(x + 9) =170
D. 13(x+6)=170
Click here to see answer by josgarithmetic(39616)

Question 1046752: Consider the equation 2x^2 − 7x + 3 = 0. If you divide the larger root of this equation by the smaller root, you obtain?
Click here to see answer by advanced_Learner(501)

Question 1046751: If f(x) = x2 + x3, then f(−3) equals?
Click here to see answer by rothauserc(4718)

Question 1046797: Solve the following equation 1. 3x^2=2a
2. X^2-3x-15=0
Click here to see answer by fractalier(6550)

Question 1046820: What is the equation of a line with a slope of -5/7 that crosses the y-axis at -1?
Click here to see answer by Fombitz(32388)

Question 1046820: What is the equation of a line with a slope of -5/7 that crosses the y-axis at -1?
Click here to see answer by ewatrrr(24785)

Question 1046893: V=1/3piRsquaredH
Solve for r
Click here to see answer by josgarithmetic(39616)

Question 1046982: Ann has twice as much money as Sue. together they have $66. how much does each one have?
Click here to see answer by jorel555(1290)

Question 1047002: Please help me solve for x: (x+3)/t=t^2
Click here to see answer by solver91311(24713)

Question 1047017: 6n - 7 = 35 how do you solve that ?
Click here to see answer by stanbon(75887)

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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23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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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