Questions on Algebra: Equations answered by real tutors!

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Question 770760: Multiply: (x + 1)(x3 + 7x2 + 5x + 4)

Click here to see answer by Cromlix(4381)

Question 770255: Raju has three boxes, whose total weight is kg. If box B is kg more than box A while box C weighs kg more than Box B, find the weight of box A.
Click here to see answer by Jc0110(165)

Question 770000: 7/9(x+y)-2/9(x-1)
Click here to see answer by tommyt3rd(5050)

Question 769530: What Is 3n-6+(-9) Equal ?
Click here to see answer by tommyt3rd(5050)

Question 770993: Find five consecutive odd integers whose sum is 85.
Click here to see answer by Alan3354(69443)

Question 770991: -5___________________-9
Click here to see answer by sheldonbbtrocks(115)

Question 771009: One half of a number is equal to 14.What is the answer?
Click here to see answer by Cromlix(4381)

Question 771067: (ASYMPTOTES)CAN SOME ONE HELP ME SOLVE THIS PROBLEM PLEASE!!!
Find the values of all vertical and horizontal asymptotes of
y = (x^3 + 5) / (x^2 + 2x + 1)

x of VA (integer)????????
y of HA (integer)????????
Click here to see answer by solver91311(24713)

Question 771103: Solve the following equation: (7.5)/(x) - (8)/(x-7.5) +1 = 0.
I tried multiplying all the numbers by the common denominator and then solving for x, but I must have done the algebra incorrectly because my answer was incorrect. I'm not sure what exactly my mistake was, so I would appreciate someone helping me with this equation!
Thanks!
Click here to see answer by solver91311(24713)

Question 771139: how can i make a real world problem with the equation y=4x
Click here to see answer by Edwin McCravy(20055)

Question 771154: Solve the equation a-8=-7
the solution is
can you help me?
Click here to see answer by MathLover1(20849)

Question 771156: Solve the following equation: (7.5)/(x) - (8)/(x-7.5) +1 = 0.
This is how I tried to solve this problem:
I multiplied everything to get a common denominator ((x-7.5)* (7.5)/(x) - (x)*(8)/(x-7.5) +1*(x-7.5)(x)) and got x^2-7.5x-8x-56.25=0 as my new equation. I used the quadratic formula next and ended up with x equaling 0.1/4 and 72.1/-4. I'm not really sure if I was even on the right track with solving this problem, so I would love to see how one of you solve it.
Thanks!

Click here to see answer by josgarithmetic(39617)

Question 767311: two consecutive odd numbers are such that their product is 35.find the numbers.
Click here to see answer by tommyt3rd(5050)

Question 771214: Hello, is anybody able to explain:
WHY solutions of the quadratic equation y=7x^2-3x-11 (has two solutions because the discriminant is positive) are irrational?

Click here to see answer by josgarithmetic(39617)

Question 771282: (0,-7), , can you tell the equation of the line containing the specified point and perpendicular to the indicated line.
Click here to see answer by Jc0110(165)

Question 770451: , solve for y.
Click here to see answer by Jc0110(165)

Question 771308: How to solve: 13= -3x - 8
Click here to see answer by Alan3354(69443)

Question 771308: How to solve: 13= -3x - 8
Click here to see answer by Edwin McCravy(20055)

Question 771319: 7-2n=n-14
Click here to see answer by jim_thompson5910(35256)

Question 771333: 6-3x+12=0 is the problem. I really need help understanding how to break down algebra equations
Click here to see answer by oscargut(2103)

Question 771345: What is the value of b in this equation?
10(1+3b)=-20
Click here to see answer by oscargut(2103)

Question 771355: 12 + 2x > 24 - x
Click here to see answer by oscargut(2103)

Question 771344: What is value of v in this equation?
-6(1-5v)=54
Click here to see answer by MathLover1(20849)

Question 771376: Write the equation of a horizontal line with a y-intercept of 7.
Click here to see answer by MathLover1(20849)

Question 771375: Write the equation of a line that passes through (0, 4) and has a slope of -1/5.
Click here to see answer by MathLover1(20849)

Question 771381: -20= -4x-6x

Click here to see answer by oscargut(2103)

Question 771430: A four-digit integer WXYZ, in which W, X, Y, and Z each represent a different digit, is formed according to the following rules
1.) X = W + Z + Y
2.) W = Y +1
3.) Z = W - 5
What is the four-digit integer?
I tried plugging in, say, Y + 1 for W in the first equation, then W - 5 for Z and Y + 1 for W, trying this method in the other equations, but I haven't gotten anywhere with this.
Could you please help me find a way to solve this? If it helps, the answer is 5940. I'm practicing for the SAT coming up.
Thank you!
Click here to see answer by josgarithmetic(39617)

Question 771469: [(s+2t)-(s+3t)]-[(2s+3t)-(5t-4s)]
Click here to see answer by Cromlix(4381)

Question 771583: $4000 invested for 1/4 of a year at a interest rate of 6.1%, how much interest did he earn
Click here to see answer by lagapa(1)

Question 771649: -3(X-6)= 2- X
Click here to see answer by oscargut(2103)

Question 771745: I need help trying to solve this equation. The equation is t^2+81=0
would this be a quadratic function problem or would this be like solving a normal equation?
If i solve it like a normal equation i keep on getting a negative under the square root sign.
how would i write the answer?
square root of -81 or square root -27 or square root +/- 27 or 81 or with the -81i
Click here to see answer by ashin(3)

Question 771773: Using The Digits 0,1,1,1,9,8 And Any Combination Of Operation Signs To Write An Expression That Equals 24
Click here to see answer by solver91311(24713)

Question 771881: hwlp me with this
performe the indication calculation 5p2/11p4

Click here to see answer by oscargut(2103)

Question 771928: Im working on a question from my summer work packet for calculus and I don't know how to do this question at all! Please help!! :)
Find the value of the unique real number between 0 and 2pi that satisfies the given conditions.
sin theta = root 3 over 2 and tan theta is less than 0
Click here to see answer by oscargut(2103)

Question 772002: SQRT(x2) = x
A all real numbers
B0
C{0,1}
Dx<=0
E none of the above
F x>=0

. Find the volume of a cube on which the diagonal of a face measures 2.
A CUBERT(2)
B8
C12
D2 SQRT(2)
E 4
F 6 SQRT(2)
Click here to see answer by oscargut(2103)

Question 772029: What is the formula for this pattern?
10, 9, 6, 1, -6
I understand that each number decreases by an odd number that is 2 more than the previous one, but I'm uncertain about how to write that as an algebra formula. I came up with 2n-(n+1), but it only worked for the first one. If you could explain how you got an answer, that would also be very welcome.
Click here to see answer by josgarithmetic(39617)

Question 768818: I need help solving the system y = -2x + 8 =1x + 2y = 1
Click here to see answer by tommyt3rd(5050)

Question 769531: What Is 16+p+q+5 Equal ?
Click here to see answer by tommyt3rd(5050)

Question 772179: 6 (x-1)=18x. How do I work this problem out?
Click here to see answer by tommyt3rd(5050)

Question 772315: What is the answer to -7+8
Click here to see answer by Alan3354(69443)

Question 772316: What is the answer to -7-(-8)
Click here to see answer by Alan3354(69443)

Question 772316: What is the answer to -7-(-8)
Click here to see answer by tommyt3rd(5050)

Question 772384: tfells2004@yahoo.com
/ for fractions
Solve the equation please.
8/5r - 23/6(4/3r + 29/6) = 317/20 - 5/6r
Thank you.
Add 5/6r to both sides.
gives 48/30r +25/6r=73/30r
Multiply -23/6 *4/3r +-23/6*29/6
Solve equation for r.
Thanks again.
Click here to see answer by Alan3354(69443)

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