Questions on Algebra: Inequalities, trichotomy answered by real tutors!

Tutors Answer Your Questions about Inequalities (FREE)

Question 341542: hello, I am having problems solving the inequality in 1/5x-3<9
Click here to see answer by Alan3354(30959)

Question 341547: hello, I am having problems solving the inequality in 4(2x+1)<2(x-1)+6(x+2)
Click here to see answer by Alan3354(30959)

Question 341551: hello, I am having problems solving the inequality in 5x>5x+11
Click here to see answer by Alan3354(30959)

Question 341550: hello, I am having problems solving the inequality in 3(x+4)-(x-1)<5
Click here to see answer by Alan3354(30959)

Question 341545: hello, I am having problems solving the inequality in 5(x+3)-2x>-21
Click here to see answer by Alan3354(30959)

Question 341543: hello, I am having problems solving the inequality in 8-3/5x<23
Click here to see answer by Alan3354(30959)

Question 341756: Good evening. I am taking a college level business calculus class. We are currently reviewing algebra. I am stuck on one problem. It is:
A-5
---- < -1
A+2

I know to take the -1 times A + 2 to get A - 5 < A + 2 and I know to take the +2 and subtract it from A - 5 to get A - 5 - 2, but what happens to the A on the right side. Is it not supposed to be a 0? I am really confused and lost and, therefore, unable to continue because the rest of this section contains similar problems. Please help me figure this problem out.

Click here to see answer by stanbon(57219)

Question 341791: 5|3x-7|+4>29 i know you have to make it into like 2 equations but do you add four to both sides and divide by five first or what?
Click here to see answer by edjones(7569)

Question 341939: A jeweler wants to make a silver alloy to be used to make necklaces. How many ounces of a silver alloy that costs $3.50 per ounce should be mixed with one that costs $8.00 per ounce to make a new 40-ounce alloy that costs $6.20 per ounce?
$3.50 grade 1
oz
$8.00 grade 2
oz

Click here to see answer by ankor@dixie-net.com(15624)

Question 342197: How to solve for x?
a)(4x+2)^-1 < 0
b)0 < (2x-4)^-1 < 1/2
Click here to see answer by Edwin McCravy(8879)

Question 342228: (10)/(x^(2)-1)-(5)/(x-1)=(3)/(x+1) Are there any solutions?
Click here to see answer by Fombitz(13828)

Question 342226: How do you solve √(4y+5)-√(y-1)=3
Click here to see answer by Fombitz(13828)

Question 341639: Hello. Can you please help me with this problem?
Write an inequality for which the solution is all real numbers in the form
ax+b > c(x+d) Explain how you know this.
Thank you!
Click here to see answer by Fombitz(13828)

Question 342488: I"m trying to help my son, but I can't I don't know how to do it myself
solve and graph the inequalities
6x+9>_21 or 9x-5<_4
Click here to see answer by vleith(2825)

Question 342406: soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get a 280 lb mixture that is 9% protein?
Click here to see answer by checkley77(12569)

Question 342486: Please show me how to do this for my son
solve and graph the inequality
12>4-x>-5
Click here to see answer by Alan3354(30959)

Question 342480: I need to help my son please.
solve and graph the inequality
8>x+4>3 the line under the 1st > sign has a _ under it, I didn't know how to
- type it.
Click here to see answer by Alan3354(30959)

Question 342484: solve and graph the inequality
3 I'm trying to help my son with these, I need to know how first
Click here to see answer by jim_thompson5910(28476)

Question 342551: a-3>12
a>12+3
a>15
Click here to see answer by jim_thompson5910(28476)

Question 342716: 8.2+v>-7.6
Click here to see answer by jim_thompson5910(28476)

Question 342843: You purchase shares of a technology company's stock and hold onto them for a year. During that time, the stock's price per share ranged from $65 to $ 143. Write a compound inequality to describe the range of stock prices.

Click here to see answer by stanbon(57219)

Question 342859: if (2m/3)>(1/3) then m could be what number?
a -2 b -1 c 0 d 1/2 e 1
Click here to see answer by Fombitz(13828)

Question 342604: x-y<5 (8,3)
Click here to see answer by Fombitz(13828)

Question 343295: Please help me solve this equation: -4 < g + 8 < 6
Click here to see answer by Alan3354(30959)

Question 343420: (Modeling) Airplane Landing Speed
To determine the appropriate landing speed of a small airplane, the formula
D= .1s^2 - 3s + 22
is used, where s is the intitial landing speed in feet per second and D is the length of the runway in feet. If the landing speed is too fast, the pilot may run out of runway; if the speed is too slow, the plane may stall. If the runway is 800 ft long, what is the appropriate landing speed? Round to the nearest tenth.
Click here to see answer by stanbon(57219)

Question 343436: I've already tried this, but not sure about the making inequalities stuffs. Here is the Question:
"Students tested the acidity of the campus pond over a three-day period. On Monda and Tuesday, the pH values were 6.75 and 7.86. Find the range of pH values for Wednesday'd reading that will result in a mean pH greater than 7.1 and less than 7.6."
Please help! Thanks!
Click here to see answer by scott8148(6628)

Question 343457: 1/3<(3-2x)/6<3/8 I need to solve for x and express in interval notation.
Click here to see answer by Fombitz(13828)

Question 343582: -3(5x+10)<-18x-9
Click here to see answer by jim_thompson5910(28476)

Question 343526: y-2<4
Click here to see answer by jim_thompson5910(28476)

Question 343742: a < b, then -a > -b why?
Click here to see answer by jim_thompson5910(28476)

Question 343997: I have been stuck on this problem for about 15 min. Please Help!!
"When Spheres-R-Us ships bags of golf balls, the number of balls in each bag must be within 6 balls of 300. Write an absolute value inequality and a compound inequality for an acceptable number of golf balls b in each bag"

Click here to see answer by stanbon(57219)

Question 344006: Please help me solve this compound inequality!!
-2<2x-4<4
(note the first < is underlined in the origional problem.)
Click here to see answer by solver91311(16868)

Question 344273: Hello, I am trying to find the solution set of the inequality 2/3n<12, i came up with the answer N<36 but i feel that is completely wrong... please try to help me.
Click here to see answer by jim_thompson5910(28476)

Question 344454: If x = y and m > y, then which of the following must be true?
I. x < m
II. x = m
III. x > m
(A) I Only (B) II Only (C) III Only (D) I and II (E) II and III
Click here to see answer by Fombitz(13828)

Question 344503: solve inequality 2x+7/5<-9
Click here to see answer by ewatrrr(10682)

Question 344682: If x > y and y > 0 and xz < 0, then which of the following must be true about all of the values of z?
(A) z > 0 (B) z = 0 (C) z < 0 (D) z > x (E) z > y
Click here to see answer by Fombitz(13828)

Question 344703: If x + y = 30 and x > 8, then which of the following must be true?
A. y > 0
B. y < 22
C. y = 22
D. y > 22
E. x < 30
Click here to see answer by stanbon(57219)

Question 345107: 2(3d-4)< 4 + 6d - 15
Click here to see answer by user_dude2008(1861)

Question 345277: I've never been good at math at all. I am in a college algebra class and need help doing quadratic equations and inequalitites. My problem is:
(12-9i)-(14-6i)

Click here to see answer by Edwin McCravy(8879)

Question 345273: I've never been good at math at all. I am in a college algebra class and need help doing quadratic equations and inequalitites. My first problem is:
(5+2i)+(7+10i)
Click here to see answer by checkley77(12569)

Question 345301: The instructions on this one say to solve each of the quadratic equations by factoring and applying the property ab=0 if and only if a=0 or b=0 The problem I need help with is:
4x^2+29x+30=0
Click here to see answer by jim_thompson5910(28476)

Question 345312: These problems say to use property 6.1 which is listed as *for any real number a, x^2=a if and only if x= square root a or x=negative square root a. the problem says:
14y^2=80
Click here to see answer by Fombitz(13828)

Question 345359: Solve in inequality of (4x - 2)/7 < x + 1 and write it in inverval notation
Click here to see answer by mananth(12270)

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