# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 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(57347)

 Question 86989: sovle and check 10x – 4 – 5x = 6 + 3x – 8 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)

 Question 86835: Solve. 3x – 7 = 2x + 8 Click here to see answer by checkley75(3666)

 Question 87023: write in demcial notation.... 42.3 x 10^4/3 x 10^7 Click here to see answer by stanbon(57347)

 Question 87040: I am trying to help a student work a very simple world problem, but I do not know how to explain to her why she can't work as she wants to. Problem is: A smaller number plus 60, when divided by the smaller number, the quotient is 4. I set up as X + 60/X = 4 I told her it is easiest to solve this problem by getting rid of the fraction and that we should multiply the X + 60/X by X and the denominator X will be cancelled out, and the 4 by X (must do both sides of equation) Then we would be left with X + 60 = 4X, then we would solve for X. She doesn't understand why we just can't cancel the two X's out of the X + 60/X in the beginning and then be left with 60 = 4. What is the reason? I can't seem to explain it to her. Thanks for help!!!! P.S. No book, it was sent home homework problem. Click here to see answer by stanbon(57347)

 Question 86929: solve and check 3x – 7 = 2x + 8 Click here to see answer by scianci(186)

 Question 87047: Andrew and Kent do word processing. For a certain prospectus, Kent can prepare it 2 hrs faster than Andrew can. If they work together, they can do the entire prospectus in 5 hrs. How long will it take each of them working alone to prepare the prospectus? Round to the nearest tenth of an hour. Click here to see answer by scianci(186)

 Question 87070: Mary is 4 years older than John. Mr Smith is 5 times as old as John. If John is x years old how old is a Mary b Mr Smith? If the sum of the three ages is 60 years find how old John is. Click here to see answer by stanbon(57347)

 Question 87077: Solve for g. s = -1/2gt^2 + vt Click here to see answer by Flake(45)

 Question 87128: Solve algebraically using one variable: The perimeter (distance around) of a rectangle is 38 inches and its area (length times width) is 70 square inches. Find the length and the width of this rectangle. Click here to see answer by jim_thompson5910(28595)

 Question 87132: one number is 12 more than the other. The larger number is 7 times the smaller number. Find the number. thank you very much in advance!!!. Click here to see answer by longjonsilver(2297)

 Question 87141: For function y=1/x-2 Give the y values for x =-1,0,1,2,3,4. Show work Using these points, draw a curve. Show Graph Click here to see answer by checkley75(3666)
 Question 87141: For function y=1/x-2 Give the y values for x =-1,0,1,2,3,4. Show work Using these points, draw a curve. Show Graph Click here to see answer by jim_thompson5910(28595)

 Question 87281: Graph the function y=x and y=2 times the square root of x, on the same graph (by plotting points if necessary). Show the points of intersection fo these two graphs. Graph: Points of intersection: Click here to see answer by rapaljer(4667)

 Question 87280: Given the table: x=-2,-1,0,1,2 y=.111,.333,1,3,9 Graph the function, identify the graph of the function (line, parabola, hyperbola or exponential), explain your choice, and give the domain and range as shouwn in the graph, and also the domain and range fo the entire function. Graph: Graph Type: Explanation: Domain: Range: Click here to see answer by rapaljer(4667)

 Question 87361: If 3x=y and y=12. Then what is x? Click here to see answer by jim_thompson5910(28595)

 Question 87445: Complete the ordered pairs so that each is a solution for the given equation 3x + 4y = 12 (0, ), ( ,3/4 ), ( , 0), (8/3 , ) Click here to see answer by checkley75(3666)

 Question 87530: Tutor, This question is from a text book. The exercise state solve literal equatio for the indicated variable Question reads: Depreciation solve for s D=C-s/n I have no clue how to begin to solve this question, any help will be greatly appreciated. Thank you. Click here to see answer by rapaljer(4667)

 Question 87563: Tutor Please Help...This question is from a textbook and I keep getting different answers. Solve for x and check your result: 6x-1 over 5 minus 2x over 3 = 3 6x-1/5 - 2x/3 = 3 Sorry I am not sure how to do the fractions I will try and type it below 6x-1 - 2x ----------------- = 3 5 3 I have come up with 1.5, 2.1, & 6 I am thinking 6 may be close but I can not get any numbers so far to come out properly when I check. Any insight into this problem would be greatly appreciated. Thank you. Click here to see answer by Earlsdon(6287)
 Question 87563: Tutor Please Help...This question is from a textbook and I keep getting different answers. Solve for x and check your result: 6x-1 over 5 minus 2x over 3 = 3 6x-1/5 - 2x/3 = 3 Sorry I am not sure how to do the fractions I will try and type it below 6x-1 - 2x ----------------- = 3 5 3 I have come up with 1.5, 2.1, & 6 I am thinking 6 may be close but I can not get any numbers so far to come out properly when I check. Any insight into this problem would be greatly appreciated. Thank you. Click here to see answer by rapaljer(4667)

 Question 87613: How long will it take B dollars to triple itself at 13% simple interest? Click here to see answer by stanbon(57347)

 Question 87755: Hi, I have some sheets on relativity and i was following the maths used in creating the Lorentz factor. It's a factoring question i have, i can factorise equations but this one i don't understand how they did it and would appreciate it if you could explain it to me please. The equation starts as: t'^2=(v^2*t'^2+I^2)/c^2 They factorise the equation to be: t'^2(1-[v^2/c^2])=I^2/c^2 How exactly did they get from that top equation to the second one? Many thanks! Steve Click here to see answer by stanbon(57347)

 Question 87820: The diameiter of a bushing is 1.47 in.The bushing has a tolerance of 0.006 in. Find the lower and upper limits of the diameter of the bushing Click here to see answer by checkley75(3666)

 Question 87884: y2-3x+2=3x2 Okay I need work in solving for y in terms of x line by line????????? Then say if it is a function or not and explain why or why not HELP/thanks Click here to see answer by rapaljer(4667)

 Question 87880: Hello out there,I need some help with some problems,the first one is,Evaluate:(a+b)^2.The next one is,Multiply:(a-2b)(a+2b).The next one is,Multiply:(g-6h)(g-6h).And the last one is,Multiply:x(x+1)(x-1).Thanks to whoever can help. Click here to see answer by SandySharma(35)

 Question 87954: Word Problem to solve - thank you need 50 warheads and silos to complete project Cost per warhead is 4 million dollars and silo cost is 6 million What is the number of warheads and silos I can produce if the budget is 210 million Need the following steps: 1. assign variables 2. write algebraic model 3. solve the model 4. answer thanks BB Click here to see answer by tutorcecilia(2152)

 Question 87962: Word problem - hard one - thanks for help Okay Making 3 different kinds of missiles for defense - each one takes a different combination of alloys - aluminum, plexiglas, and titanium Missile 1 - needs 2 tons of alum, 2 tons of plex and 3 tons of titan Missile 2 - 3 tons of alum, and 1 ton of titan Missile 3 - 3 tons of plex and 1 ton alum Need to produce 800 of type 1 650 of type 2 and 350 of type 3 How many tons of each alloy will we need???? HELP!?!?!?!?!? Steps needed: 1. assign variables 2. write algebraic model 3. solve model 4. answer thank you so much - lucyloo Click here to see answer by stanbon(57347)

 Question 87957: Word problem to solve; thanks purchased a combination of 25 air condition and heating systems for \$440,000. One single AC system cost 22,000 and single heat system cost 11,000. How many of each did they buy Steps 1. assign variables 2. write algebraic model 3. solve model 4... answer Thanks bb Click here to see answer by stanbon(57347)

 Question 87964: please put into slope intercept form: X<= 2y +8 2y + 3x <= 4 2y <= 3x +4 Thanks BB Click here to see answer by tutorcecilia(2152)

 Question 87956: Word problem: 20 gallons of fuel and 14 gallons of collant cost \$12,000 - needed for first simulation test 15 gallons of fuel and 9 gallons of coolant cost \$8,000 - needed for second simulation test What is the cost per gallon of fuel and a collant tank for the project? Steps 1. assign variables 2. write algebraic model 3. solve model 4. answer thanks bb Click here to see answer by stanbon(57347)

 Question 88129: Hi i need to find the solution on this problem: the product of two number is 30 and their difference is 7. find the numbers. Click here to see answer by stanbon(57347)

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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