Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 689076: Solve the system of equations using the addition method.
2x + 9y = -49
10x + 3y = 49
Click here to see answer by MathLover1(20849)

Question 689073: I think this is an equation, but I'm not entirely sure. I need to know the equation of the line that passes by the following information.
1. The line passes through the (3,-2) and has a slope of 2/3
2. The line has a y-intercept of 5 and a slope of -2
3. The line passes through the points (2,-4) and (1,8)
All answers MUST be in slope-intercept form. Thank you so so much for helping me in advance!
Click here to see answer by ReadingBoosters(3246)

Question 688964: Use synthetic division to divide f(x) = x^3 + 12x^2 + 41x + 30 by x + 1. Use the result to find all zeros of f.
I got {1, 5, 6}
Click here to see answer by MathTherapy(10551)

Question 689087: 125c3 + 27
factor
Click here to see answer by ReadingBoosters(3246)

Question 689019: PLEASE HELP .. I'm trying to help my son w/his hw..
I need answers/solutions to refresh my memory !!
1. x+y=4, 2x+y=5
2. x-y=5, 2x+3y=0
3. x-y=-2, x+y=4
4. y=x+3 (5,0)
5. y=2x+3 (-4,1)
Click here to see answer by ankor@dixie-net.com(22740)

Question 689086: (5m2 + 3m - 2)(m2 - 2m - 4)
Click here to see answer by ReadingBoosters(3246)

Question 689070: x^2 - 22x + 121 = 225
Click here to see answer by ReadingBoosters(3246)

Question 689167: what does x equal in this problem? 6x-3=21
?
Click here to see answer by jim_thompson5910(35256)

Question 689286: The length of the base of a triangle three times the height. The area of the triangle is 54 squared. Find the base and height of the triangle. (by factoring)
Im confused on the formula I should be using. Do I need a formula?
Click here to see answer by ankor@dixie-net.com(22740)

Question 689446: Please help me solve this equation:
Click here to see answer by Alan3354(69443)

Question 689485: how to write (the product of 12 and the sum of a number and -3) in algebraic form
Click here to see answer by checkley79(3341)

Question 689714: how do you write -8y=20+2/5x in standard form?
Click here to see answer by rfer(16322)

Question 689714: how do you write -8y=20+2/5x in standard form?
Click here to see answer by josmiceli(19441)

Question 689714: how do you write -8y=20+2/5x in standard form?
Click here to see answer by MathTherapy(10551)

Question 689759: trying to help my 7th grader , with his 8th grerade pre algebra. He knows the basis of this problem, but isn't sure what to do since the x is in a fraction.
6(x/2-4) = 21+ 6x
Click here to see answer by Alan3354(69443)

Question 689804: im trying to find the equation of the line containing the points (0,8) and 6x+7y=4
Click here to see answer by mananth(16946)

Question 689955: The temperature is dropping 3 degrees an hour. What is the change in temperature over a 5 hour period....
Click here to see answer by Stitch(470)

Question 690036: If -n=266, what is n?
Click here to see answer by jim_thompson5910(35256)

Question 690046: I am needing to show my work and am serverly struggling on a few questions.
the frist one is
y/3=1.5
25/y=5
7/y=1/4

Click here to see answer by stanbon(75887)

Question 690090: 15 - 4y = -21
Can you show step by step?

Click here to see answer by solver91311(24713)

Question 690150: 3x + 2(5x + 20) = 170
x=?
Click here to see answer by jim_thompson5910(35256)

Question 690110:
An odd number which when multiplied by 4 and added to the next odd number produces a sum of 177. Find the number.
I got to n+x=44.25. Is this right?
Click here to see answer by checkley79(3341)

Question 690169: What is the answer to 2x+4-8x=0 and how do you work it out?
Click here to see answer by ReadingBoosters(3246)

Question 690236: roberta is thinking about joining the food co-op store. if she pays $10.00 to join, she will get 10% off on all the groceries she buys there. how much must she buy before her savings equal her membership fee?
Click here to see answer by josmiceli(19441)

Question 690333: 4x+2x+18=-13+3x-26 what is x?
Click here to see answer by ReadingBoosters(3246)

Question 690772: For each number,identify the set or stes of which number is a member.Use the symbols N,Z,Q,E,IR,W AND REPRESENT each set
Click here to see answer by solver91311(24713)

Question 690920: how do you solve this (x+5)/16=(x+3)/12
Click here to see answer by rfer(16322)

Question 690712: please help solve this equation?? I do not understand how to do this.
(5x+5)(10x-6)=0
Click here to see answer by ankor@dixie-net.com(22740)

Question 690969: how do you solve m over 3 = m+4 over 7 for m?
Click here to see answer by stanbon(75887)

Question 690968: How do you solve x-1 over 3 = x+1 over 7 for x

Click here to see answer by fcabanski(1391)

Question 691172: add two to any number
Click here to see answer by pmatei(79)

Question 691192: Is the sum of two numbers is the same as its product. ?

Click here to see answer by jim_thompson5910(35256)

Question 691196: (2x/5) + 3 = (7x/10)
Click here to see answer by checkley79(3341)

Question 691265: what are the equations for the vertical and horizontal lines passing through the point (6, 3)
Click here to see answer by Alan3354(69443)

Question 691265: what are the equations for the vertical and horizontal lines passing through the point (6, 3)
Click here to see answer by MathLover1(20849)

Question 691216: what is x equal : 2x+ 14=100
Click here to see answer by ReadingBoosters(3246)

Question 691366: Does multiplication by a positive number makes positive numbers larger
Click here to see answer by Alan3354(69443)

Question 691333: The sum of the 3 angles of a triangle is 180 degrees. In triangle PQR, the largest angle is twice the size of the smallest angle. The remaining angle is 16 degrees larger than the smallest. Write and solve an equation to find the size of the smallest angle in degrees.
Click here to see answer by checkley79(3341)

Question 691390: It has been a long time for me.
Looking for X in this equation.
134000/X = 1576470
please show the steps. i know the answer. I am justing trying to see the steps.
Click here to see answer by Alan3354(69443)

Question 691500: How do you solve x + 2x - 6= 240?
Click here to see answer by jim_thompson5910(35256)

Question 691501: 3/8+p/8=3 1/8
Click here to see answer by rfer(16322)

Question 691862: Need help please: Use substitution to solve system of equations:
2x-y=8
y=2x-3
I cannot come up with anything that works. Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 691985: Solve the systems algebraically:
y=x^2=4x-2
y=2x+1
Click here to see answer by Alan3354(69443)

Question 692124: (3x+4)/5 + 6/5 = -5x/6
I tried to get a common denominator by making it 30, but there is no answer with a 30 as a denominator.
Click here to see answer by ReadingBoosters(3246)

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