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Question 717333: a jar contains n nickels and d dimes. there are 20 coins in the jar, and the total value of the coins is $1.40. how many nickels and dimes are in the jar? (hint:Nickels are $0.05 and dimes are worth $0.10.)
Click here to see answer by jsmallt9(3758)

Question 717492: Hi i need help on solving using substitution for two problems:
x+y=1
2x+3y=-4
Please show all work thank you!
Click here to see answer by rfer(16322)

Question 717604: -3x-18y=6
6x-y=14
Click here to see answer by stanbon(75887)

Question 717697: 2x + 5y + 30 = 0 The point ( 5 2 , y) is a solution to the equation shown. What is the value of y?
Click here to see answer by stanbon(75887)

Question 717643: How do you graph y=4x
Click here to see answer by checkley79(3341)

Question 717958: Solve the system of equations using substitution. 3x + 2y =7. Y = -3x + 11
Click here to see answer by oscargut(2103)

Question 717980: word problem: Malik canoed against the current for 2 hours and then with the current for one hour before resting. Julio traveled against the current for 2.5 hours, and with the current for 1.5 miles. They traveled 9.5 miles against the current, and 20.5 miles with the current. The current is 3 miles per hour. How fast do they travel in still water. I can not figure out how to write the system of equations to solve this.

Click here to see answer by lynnlo(4176)

Question 718170: I am having problems figuring out linear equations i dont really know where to start x+y=3
Click here to see answer by checkley79(3341)

Question 718226: I need help making 2 equations for this:
The break-even point is the point at which income
equals expenses. Ridgemont High School is paying $13,200 for the
writing and research of their yearbook plus a printing fee of $25 per
book. If they sell the books for $40 each, how many will they have to sell
to break even? Explain.
Click here to see answer by stanbon(75887)

Question 718421: I need help solving 3c+2d=2
D=4
By substitution
Click here to see answer by algebrahouse.com(1659)

Question 718423: How do I show my work for y=x-4
4x+y=26
Click here to see answer by rfer(16322)

Question 718503: Question: An investor has a total of $25,000 deposited in three different accounts, which earn annual interest rates of 8%, 6%, and 4%. The amount deposited in the 8% account is twice the amount in the 6% account. If the three accounts earn total interest of $1,520, how much money is deposited in each account.
Note: I have not attempted this problem because it confuses me and we are doing two of the four boxed problems but I don't see how to work it here.
Click here to see answer by mananth(16946)

Question 718605: what is the x-intercept of the line with equation 3y - 4x = 10
Click here to see answer by rapaljer(4671)

Question 719116: 3x+2y=18
3x+8y=-12
Substitution method
Click here to see answer by lynnlo(4176)

Question 719280: Please please please help! The problem is:
Write and equation in standard form of the line that passes through (7,-3) and has a y-intercept of 2.
I put (incorrectly) my answer as 2=7x-3. Can you help?
Click here to see answer by solver91311(24713)

Question 719792: I cant seem to understand the question and the answer choice I am confuse were do they get 57.50?

The amount of a person�s paycheck p varies directly with the number of hours worked t. For 22 hours of work, the paycheck is $126.50. Write an equation for the relationship between hours of work and pay.
p=57.50t
p=t+57.50
p=5.75t
p=t+5.75

Click here to see answer by checkley79(3341)

Question 719809: x-18=-6y
4x-0=3y
Click here to see answer by checkley79(3341)

Question 719881: how do you solve
3x-8y=-44
-3+10y=58
Click here to see answer by Alan3354(69443)

Question 720149: how can I solve this solve each system of equations by substitution method
-3x+7y=14
2x-y=-13
Click here to see answer by lenny460(1073)

Question 720206: What is the solution to v^2-7=0
Click here to see answer by lynnlo(4176)

Question 720233: Solve for Y: 5y-6 / 3x+2 = ay
Click here to see answer by MathLover1(20850)

Question 720256: Solve by using the elimination method, answer in an ordered pair. 5x-2y=9, 3x+4y=-5. P.s- If you can please show me maybe a simple way to go about doing these problems, or just show me the steps to help me with future problems.
Click here to see answer by ankor@dixie-net.com(22740)

Question 720311: X+y=275
X*.1+y*.25=51.50

Help?
Click here to see answer by checkley79(3341)

Question 720416: When I solve for x (which I have no problem doing) I must "plug in" the number to one of the equations to find y to complete the solution. Do I plug the x into the original equation or modified one, of which I used elimination to create?
Click here to see answer by ankor@dixie-net.com(22740)

Question 720341: Ok So I Have A Question From Math Class That Says: I Have A Mason Jar Full Of Coins, Your Task Is To Calculate Exactly How Many Pennies, Nickles, Dimes And Quarters Are In The Jar. There Are Exactly 513 Coins In The Jar, The Combined Weight Of The Jar And The Coins Is 1779 Grams, The Number Of Pennies In The Jar Is Twice The Sum Of The Nickels, Quarters And Dimes.
I Was Allowed To Ask 3 Questions I Asked The Weight Of The Jar. The Jar Weighs 301 Grams By Itself. I Also Asked How Much Each Coin Ways And He Said Pennies Weigh 2.5 Grams, Nickels Weigh 5 Grams, Quarters Weigh 5.8 Grams, And Dimes Weigh 2.3 Grams. I Then Asked What The Total Amount Of Money In The Jar Was And He Said There Is $17.12
Please Help Me Figure This Out I Can't Seem To Get The Right Answer
Click here to see answer by jsmallt9(3758)

Question 720725: Solve the equation
2(x-3)-3x=4-5x
Click here to see answer by unlockmath(1688)

Question 720924: you are to choose between 2 different bands. flyer fever charges a rate of $470 and them $1.25 per ticket to play for the evening. eaglette charges $350 plus 2.00 for each ticket sold
write a linear equation showing the costs for each band. graph each of your lines to determine when the costs of the bands will be equal. use the elimination method to verify the solution from your graph is correct
Click here to see answer by nerdybill(7384)

Question 721027: The sum of two numbers is 14. The larger number is 2 more than 3 times the smaller number. Find the two numbers that satisfy these requirements.
I don't really understand this question.
PLEASE help me!!
Click here to see answer by jim_thompson5910(35256)

Question 721026: Solve the system of equations.
x + 5y = 6
2x - 8y = -24
How do I do that?
Click here to see answer by lynnlo(4176)

Question 721026: Solve the system of equations.
x + 5y = 6
2x - 8y = -24
How do I do that?
Click here to see answer by Vladdroid(91)

Question 720998: x - y < 7
2x - y > 11
y ≥ 0
I have an answer of y>1/1x-7, y<2/1x-11, y> or equal to 0.
Is this right, and if so, how to I graph it?
Click here to see answer by DrBeeee(684)

Question 721063: one number is 18 more than three times another number the difference in the numbers is 54 find the numbers
Click here to see answer by lynnlo(4176)

Question 721025: Given the system of equations, what is the value of the determinant?
3x + y = 9
2x - 4y = 6
Click here to see answer by Alan3354(69443)

Question 721383: use the elimination method to solve.
a+7b=13
a+2b=-2
Is there a solution
Are there infinetly many soutions
Or is there no solution
Click here to see answer by MathLover1(20850)

Question 721749: Do the equations x= 4y+1 and x= 4y-1 have the same solution?

Click here to see answer by Alan3354(69443)

Question 721751: Solve the following systems of equations using SUBSTITUTION to eliminate one variable. If the system has no solution, indicate that it is inconsistent; if it has infinite solutions, indicate that it is DEPENDANT; if the system has one solution, CHECK your answer.
y+5x=17
4x-3y=6

PLEASE AND THANK YOU. I AM SUPER BEHIND IN SCHOOL.
Click here to see answer by Alan3354(69443)

Question 721871: Hi, I need you help on this question. I have been trying guess and check for an hour and STILL can figure it out!! can you please help me??
Question- At a bakery, Cody bought 3 bagels and 2 muffins for $9.00. At the same bakery, Spencer bought 5 bagels and 4 muffins for $16.50. What is the cost of each items? THANK YOU!!!
Click here to see answer by Alan3354(69443)

Question 722049: The sum of three consecutive odd integers is 189. What are the integers?
Click here to see answer by lenny460(1073)

Question 722063: In a mixture of concrete, there are three Ib of cement mix for each pound of gravel. If the mixture contains a total of 240 Ib of these two ingredients, how many pounds of gravel are there?
Click here to see answer by josgarithmetic(39617)

Question 722524: I can't solve the following problem about a three-digit number:The sum of the three digits is 12 . The tens digit exceeds the hundred digit by the same amount that the units digit exceeds the tens digit. If the digits are reversed, the new number exceeds the original number by 198. Find the original number. For the first equation I got h+t+u=12,but I just can't find the second.Please help!!!
Click here to see answer by mananth(16946)

Question 722678: Graph 4x+18=-2x and define slope, x&y intercept.
I found: 4x=-2x-18=
4x+2x=-2x-18+2x
6x/6=-18/6
x=-3
But slope and y is 0, is this correct? How would I graph this? Thank you
Click here to see answer by Alan3354(69443)

Question 722927: help me find an equation of a line containing the given point and having the given slope. (4,9),m=15/8
Click here to see answer by lwsshak3(11628)

Question 723130: Is the ordered pair (-4,-9) a solution to the linear equation: y=3/4x-6?
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, 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, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515