Tutors Answer Your Questions about Inequalities (FREE)
Question 1148963: Some eighth-grade students want to raise at least $300 for a field trip by selling popcorn and fruit bars.
The chart below shows the amount of profit they will make on each sale.
If they sell exactly 500 fruit bars, how many boxes of popcorn will they need to sell to make a total of $300?
popcorn=60 cents
fruitbars=30 cents
Click here to see answer by addingup(3677)   |
Question 1149072: you are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+48t^3-140t^2+170t. At noon you were 145 miles from home.
Between 1:00pm and 2 :45pm you drove [] miles.
Click here to see answer by Alan3354(69443)  |
Question 1149072: you are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+48t^3-140t^2+170t. At noon you were 145 miles from home.
Between 1:00pm and 2 :45pm you drove [] miles.
Click here to see answer by ikleyn(52781)  |
Question 1149071: you are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+48t^3-140t^2+170t. At noon you were 145145 miles from home.
Between 1:00pm and 2 : 452:45pm you drove [] miles.
Click here to see answer by Alan3354(69443) |
Question 1149071: you are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+48t^3-140t^2+170t. At noon you were 145145 miles from home.
Between 1:00pm and 2 : 452:45pm you drove [] miles.
Click here to see answer by ikleyn(52781) |
Question 1149073: You are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+45t^3-144t^2+170t. At noon you were 155 miles from home.
At 3:15pm you were driving at a rate of [] miles per hour.
Click here to see answer by Alan3354(69443) |
Question 1149073: You are driving a car away from home. Your velocity (miles per hour) t hours after noon is given by v(t)=-5t^4+45t^3-144t^2+170t. At noon you were 155 miles from home.
At 3:15pm you were driving at a rate of [] miles per hour.
Click here to see answer by ikleyn(52781) |
Question 1149872: Is about inequalities, I know the rule of flipping the sign if you multiply or divide by a negative numbers but a few examples confuse me.
To make this inequality 5x+2y<14 into the slope-intercept form y=mx+b, please tell me if the sign has to be flipped.
I do it like this
5x+2y<14
y<-5/2x+14/2
y<-5/2x+7
I am not dividing by a negative number but 5 is negative, 2 is positive, should I flip the sign or not?
Click here to see answer by math_helper(2461)  |
Question 1150491: We have a rectangle and a right-angled triangle.
All measurements are in centimeters.
The area of the rectangle is greater than the area of the triangle.
Find the set of possible values for x when:
rectangle length: 5x-6
rectangle width: x-1
triangle height: 2x
triangle base: x
Click here to see answer by MathLover1(20849)  |
Question 1150721: How do I simplify |pi-2| to not have the absolute value signs?
The answer that I got was {pi-2 if pi-2 is greater than or equal to 2/pi and -pi+2 if -pi+2 is less than 2/pi.
I can't tell if I'm wrong or putting it in wrong. I'm taking an online winter course and don't know how to type the answer in.
Thank You!
Sarah Marshall
Click here to see answer by josgarithmetic(39617) |
Question 1150721: How do I simplify |pi-2| to not have the absolute value signs?
The answer that I got was {pi-2 if pi-2 is greater than or equal to 2/pi and -pi+2 if -pi+2 is less than 2/pi.
I can't tell if I'm wrong or putting it in wrong. I'm taking an online winter course and don't know how to type the answer in.
Thank You!
Sarah Marshall
Click here to see answer by ikleyn(52781) |
Question 1150767: I was taking a practice test and got the following question wrong:
Solve the following inequality:
-12x -3 > 45
1. x = -8
2. x = -5.3
3. x = -4
4. x = -3.5
The correct answer is "x = -8." However, I selected number 2 (x = -5.3).
Both answers, when multiplied by -12 is greater than 45. Why is #2 wrong?
Click here to see answer by MathLover1(20849) |
Question 1150767: I was taking a practice test and got the following question wrong:
Solve the following inequality:
-12x -3 > 45
1. x = -8
2. x = -5.3
3. x = -4
4. x = -3.5
The correct answer is "x = -8." However, I selected number 2 (x = -5.3).
Both answers, when multiplied by -12 is greater than 45. Why is #2 wrong?
Click here to see answer by MathTherapy(10552)  |
Question 1150767: I was taking a practice test and got the following question wrong:
Solve the following inequality:
-12x -3 > 45
1. x = -8
2. x = -5.3
3. x = -4
4. x = -3.5
The correct answer is "x = -8." However, I selected number 2 (x = -5.3).
Both answers, when multiplied by -12 is greater than 45. Why is #2 wrong?
Click here to see answer by ikleyn(52781) |
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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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