Questions on Algebra: Systems of Linear Equations answered by real tutors!

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Question 94843: if f(x)=(2-xsquare)
how to solve :
f(x+h)-f(x)
Click here to see answer by bucky(2189)

Question 96171: write the equation of 3 lines so that the y- interecept of each line is -3.
Click here to see answer by stanbon(57290)

Question 96263: The two companies with top revenues in the Fortune 500 list for 2005 were Exxon Mobil and WlMart. Their revenues together totaled $656 billion. Wal-Mart revenues were $24 billion less than Exxon Mobil revenues. What were the revenues of each corporation?
Click here to see answer by tutorcecilia(2152)

Question 96328: You travel 575 miles in 8 hours. Part of the trip is made at 60mph and part of the trip is made at 80mph. Find the time traveled at each rate. This is the question. I have that distance =rate * time and 575=r*8. I also have that r=(60T+80t)/2 and T+t=8 but when i try to solve it I get a negative time. Thanks for trying to help.
Click here to see answer by checkley71(8403)

Question 96367: how do i find sloope of an equation that looks like this
X-2/3y=1/4
and
.
.
.
2X-5Y=0
Click here to see answer by elima(1433)

Question 96367: how do i find sloope of an equation that looks like this
X-2/3y=1/4
and
.
.
.
2X-5Y=0
Click here to see answer by checkley71(8403)

Question 96755: solve by the substitution method x+3y=-8,4x-3y=23
Click here to see answer by jim_thompson5910(28536)

Question 96826: Graph each system of equations using the coordinate plane provided. Then determine whether the system has one solution, no solution, or infinitely many solutions. If the system has one solution, name it.
2x-y=-3
6x-3y=-9
Click here to see answer by jim_thompson5910(28536)

Question 96925: ma scored 273 points last season for her high school basketball team. her points results from a combination of two-points shots and three-points shots. she made a total of 119 shots. how many of each type of shot did ma make?

define 2 variables and write 2 equations and solve them algbraically.
Click here to see answer by mathslover(135)

Question 96937: How do I graph line & calculate slope for the following equation?
y=10-2x
Click here to see answer by uma(370)

Question 97105: please help me solve this equation 0.1x-30=16-0.06x,80
Click here to see answer by stanbon(57290)

Question 97146: Any help you can give me on this will be greatly appreciated.
Find the equation of the line that goes through the following set of points.
(8,10) (12,22)
Click here to see answer by checkley71(8403)

Question 97147: Any help you can give me on this will be greatly appreciated.
Find the equation of the line that goes through the following set of points.
(-4,10) (2,6)
Click here to see answer by checkley71(8403)

Question 97145: Help I'm completely lost on this!
Determine if each relation is Linear or Not Linear.
x y
-2 -14
3 11
5 21
Click here to see answer by stanbon(57290)

Question 97235: Hello. I am having trouble converting a linear equation that is in slope-intercept form into standard form.
Please help me to convert y=(3/2)x-9 into standard form.

Thank you very much.
Click here to see answer by edjones(7569)

Question 97233: Solve the system
2x + 3y = 4
x + 4y = 7
Click here to see answer by edjones(7569)

Question 97731: x-2y=6

Click here to see answer by elima(1433)

Question 97815: find two consecutive odd intergers such that twice the larger is 17 more than the smaller.
Click here to see answer by checkley71(8403)

Question 97819: find two consecutive even integers such that the smaller added to three times the larger gives a sum of 46
Click here to see answer by checkley71(8403)

Question 97819: find two consecutive even integers such that the smaller added to three times the larger gives a sum of 46
Click here to see answer by edjones(7569)

Question 97827: two houses on the same side of the street have house numbers that are consecutive even integers. the sum of the integers is 58. what are the two numbers?
Click here to see answer by ptaylor(2048)

Question 97902: shimaran is twice as ols as her son.in four years she will be four times as old as her son was 9 years ago. how old is each now
Click here to see answer by aaaaaaaa(138)

Question 97849: if five times the smaller of two consecutive integers is added to three times the larger, the result is 59. find the integer
Click here to see answer by elima(1433)

Question 97059: Solve by the method of you choice. Identify systems with no solution ad systems with infinitely many solutions, using set notation to express their solution sets.
6x + 2y = 7
y = 2 - 3x
Please solve
Click here to see answer by kiljoy(51)

Question 98092: p=a+b+c for b
Click here to see answer by checkley71(8403)

Question 98214: need some help
|5s + 2|= |s + 8|
not sure what to do with the lines, Thanks David
Click here to see answer by yhanie(3)

Question 98669: kaylene is 30 yrs. old & jessica 22 yrs. old. how many yrs. ago was kaylene twice as old as jessica?

Click here to see answer by abutlerus(2)

Question 98808: Richard has 22 coins with a total value of $4. If the coins are all quarters and dimes, how many of each type of coin does he have?
Click here to see answer by ankor@dixie-net.com(15646)

Question 98805: Find values for m and b in the following system so that the solution to the system is (-3, 4).
5x+7y = b
mx+y = 22

Click here to see answer by malakumar_kos@yahoo.com(315)

Question 98735: Solve:
8(2f-3)= 4(4f-8)
Click here to see answer by rmromero(383)

Question 98873: a washing machine technician charges $27 for the first hakf hour and $18 for each half hour part therafter, how long did the technicain work if the bill did not exceed $100?
Click here to see answer by paige(1)

Question 98872: Peter received commissions of $150 and $225. How much be receive from a third sale so his total commission will exceed $500?
Click here to see answer by doukungfoo(195)

Question 98960: Rewrite the equation below in general form Ax + By = C
where A, B and C are the smallest integers possible
and A > 0.
y = x +
Click here to see answer by Edwin McCravy(8893)

Question 98982: 13a-15b- a +2b = Not to sure of which one would be 1st, the outer or the inter?
Click here to see answer by checkley71(8403)

Question 99008: x/2+x/4=5
Click here to see answer by stanbon(57290)

Question 99017: A brand of grape drink that is 25% grape juice is mixed with another brand that is 75% grape juice. The result is 7 gallons of grape drink that is 35% grape juice. How much of the brand that is 25% grape juice was used? What are the steps to determine the answer?
Click here to see answer by stanbon(57290)

Question 99250: derive the slope-intercept form of a linear equation from the slope formula using (o,b) as the coordinates of the point where the line crosses the y-axis and arbitrary point (x,y).
Click here to see answer by stanbon(57290)

Question 99275: In 2006 39.6 million people lived below poverty level in the U.S. This represents a 80% increase from the number in 2002. How many people lived below the povert level in 2006?
Click here to see answer by stanbon(57290)

Question 99303: A nut mixture consists of almonds and cashews. Almonds are $4.98 per pound, and cashews are $6.98 per pound. How many pounds of each type of nut should be mixed to produce a 16 pounds selling for $5.73 per pound.
Click here to see answer by edjones(7569)

Question 99236: derive the slope-intercept form of a linear equation from the slope formula using (o,b) as the coordinates of the point where the line crosses the y-axis and arbitrary point (x,y).
Click here to see answer by scott8148(6628)

Question 99240: derive the slope-intercept form of a linear equation from the slope formula using (o,b) as the coordinates of the point where the line crosses the y-axis and arbitrary point (x,y).
Click here to see answer by scott8148(6628)

Question 99242: derive the slope-intercept form of a linear equation from the slope formula using (o,b) as the coordinates of the point where the line crosses the y-axis and arbitrary point (x,y).
Click here to see answer by scott8148(6628)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845