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Tutors Answer Your Questions about Inequalities (FREE)
Question 139760: You are at the music store to buy some CDs. You have $45 to spend and the store sells CDs for $12.99 each. Write an inequality that represents the number,n, of the CDs that you can buy without spending more money than you have.
I'm having problems with this one because I'm not sure on how to set it up. I know you don't want to go over the 45 dollars and you can buy 3 CDs with that money that you have, but i'm just stuck because i don't know how to set it up. Any info would be appreciated, thanks!
Click here to see answer by solver91311(5072)   |
Question 140207: I am having trouble with these types of problems can you help?
Solve for x. Collect xs on the LEFT side. The solution should be presented with x first, the correct inequality symbol, then the number.
3(4x – 5) < 9
Click here to see answer by scott8148(3382)  |
Question 140398This question is from textbook Mathematical Ideas
: Here is the problem I am having trouble with. All I want is just the formula in order to do this problem. I enjoy working them out on my own. Can you please help me? I am just not good at these story problems. sigh
Two families have agreed to meet at a campground for the weekend at 5 p.m. Friday evening. Family A lives due South of the campground and will leave at 2 p.m. traveling 70 mph. Family B lives due North of the campground. They will leave home at 1:45 p.m. traveling at 68 mph. How far apart do the families live?
Thank you ever so much! This question is from textbook Mathematical Ideas
Click here to see answer by stanbon(26256)  |
Question 141675: Solve the compound inequality and graph the solution.
u+6 ≥ 1 and u-3<2
i know its either -1 ≤ u < 7 (and im not sure about the dots on this one too)
or -5≤u<5 (but im not sure where the dot should be closed or not on the -5 or the 5)
Click here to see answer by stanbon(26256) |
Question 143176: I'm having problems with this question: The velocity of an object fired directly upward is given by V = 35 - 9.8t, where t is time in seconds. What inequality describes the velocity when t is between .5 and 1.5 seconds? My response was 14.7 > 35 - 9.8t . 4.9 and this was wrong. Could you show me the correct answer and how you got it?
Click here to see answer by oscargut(682)  |
Question 143635: solve the inequality 2x+6>x-4
solve the inequality 3x+2< (or equal to)-16
solve the inequality 6-3x< (or equal to) 18
solve the inequality -8<2(x-3)< (or equal to) 8
Can someone PLEASE exmplain these problems to me.
It has been 20+ years since I have taken math and all this looks Greek to me.
Any help you can give would be appreciated!!!
Thank you!!!!
Click here to see answer by jim_thompson5910(13787) |
Question 144140: This is my last question that I just do not understand if someone could help me please.
Solve then graph.
t + 12 <_ 6 (the < goes above the _)
The solution is {tlt>_?} again there is an arrow with [ or )on one end on a number and I do not understand how to do this part. I m so confused with this part it is nuts. please help.
Click here to see answer by jim_thompson5910(13787) |
Question 144648This question is from textbook
: I am suppose to write a the statement using inequality notation, here is the statement:
The tire pressure p is at least 30 pounds per square inch and no more that 35 punds per square inch.This question is from textbook
Click here to see answer by stanbon(26256) |
Question 144709: On the first of four exams, your grades are 82, 75, 80, and 90. There is still a final exam, and it counts as two grades. You are hoping to earn a B in the course. This will occur if the average of your six exam grades is greater than or equal to 80 and less than 90. What range of grades on the final exam will result in earning a B? Use interval notation to express this range.
Okay this is what I got but I'm not sure if I did it right.
 
((327+2x)/6)*6>=80*6 ((327+2x)/6)*6<90*6
327+2x>=480 327+2x<540
-327 -327 -327 -327
2x>=153 2x<213
(2x)/2>=153/2 (2x)/2<213/2
x>=76.5 x<106.5
[76.5,106.5)
Click here to see answer by solver91311(5072) |
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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
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