Tutors Answer Your Questions about Inequalities (FREE)
Question 421499: (A)What percent of 40 is 25?
(B) Use an inequality to solve the problem. Be sure to show the inequality and all of your work.
Jon has 1121 points in his math class. He must have 88% of the 1400 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive credit for the class?
Click here to see answer by mommacrafton(2)  |
Question 472834: Part 1:
If you were solving a system of equations and you came to a statement like 1 = 3, what do you know about the solution(s) to this system?
Part 2:
Solve the following system and show all of your work.
x − 2y = 14
x + 3y = 9
Click here to see answer by richard1234(7193)  |
Question 472790: DG’s Plumbing and Heating charges $50 plus $65 per hour for emergency service. Bill remembers being billed just over $450 for an emergency call. How long, to the nearest hour, was the plumber at Bill’s house?
Click here to see answer by rfer(16322) |
Question 472991: An automatic swing is designed to hold a baby who weighs at least 12 pounds but no more than 20 pounds. If a baby weighs 7.2 pounds at birth and gains 0.2 pounds each week, for what range of weeks will it be safe to put the baby in the swing? Write your answer in interval notation. No spaces!
Click here to see answer by josmiceli(19441)  |
Question 472988: the student council is sponsoring a concert as a fund raiser. tickets are $3 for students and $5 for adults. the student council wants to raise more than $1000. if 200 students attend, how many adults must attend?
Click here to see answer by josmiceli(19441) |
Question 473004: Jakaya received an inheritance of $70,000. She invested part at 8% and deposited the remainder in tax-free bonds at 10%. Her total annual income from the investments was $6000. Find the amount invested at 10%.
Click here to see answer by mananth(16946)  |
Question 473082: Determine which pair of equations represent parallel lines and which pair represents perpendicular lines
7.
a. x + 2y = 5 ______________
y − 2x = 7
b. 2x + y = 7
−7y =14x−21
______________
c. x − y = 5 ______________
x + y = 7
Click here to see answer by MathLover1(20849)  |
Question 473098: Hello, can you please help me solve these two problems :)
Find the solution set. Write answer in interval notation.
x^3(X-2)^2(x+3)< 0
I tried to FOIL the squared quantity, which is a different of squares
(x-2)(x+2), which gave me x^2-2x+2x- 4
then i tried multiplying the quantity (x+3)by (x^2-4)
my answer ca out to be x^6 + 3x^4-4x^3+ 12x^2. I know this isnt correct?
Help please )
Next question is Graph the Function. Specify the x-intercept, y-intercept, asymptote, domain and range.
f(x)= 7^x
Please help. Thank you! :)
Click here to see answer by stanbon(75887) |
Question 473079: 12. Solve this compound inequality, showing all work. Graph the solution on the number line and express the answer using interval notation.
X
Y1
Y2
-3
-2
8
-2
0
5
-1
2
2
0
4
-1
1
6
-4
2
8
-7
3
10
-10
3v+7≤2v+5 or 4v+1≤6v-5
−4 −3 −2 −1 0 1 2 3 4 5
Interval Notation: __________________
Click here to see answer by sofiyac(983)  |
Question 473513: Solve the absolute value inequality. Write the answer in interval notation. The problem is: |5-2x over 6|< or equal to 3 - can you show me how to solve this. I thought you have to multiply the 6 by all the numbers, but I'm not getting the correct answer. Thanks.
Click here to see answer by stanbon(75887) |
Question 473513: Solve the absolute value inequality. Write the answer in interval notation. The problem is: |5-2x over 6|< or equal to 3 - can you show me how to solve this. I thought you have to multiply the 6 by all the numbers, but I'm not getting the correct answer. Thanks.
Click here to see answer by ccs2011(207)  |
Question 474893: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25 (t-400)+ 71.95, where it is assumed that t >_ 400 minutes. What times will keep costs between $112.70 and $153.20?
Click here to see answer by lwsshak3(11628) |
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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
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