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

Tutors Answer Your Questions about Inequalities (FREE)

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(32388)

Question 343582: -3(5x+10)<-18x-9
Click here to see answer by jim_thompson5910(35256)

Question 343526: y-2<4
Click here to see answer by jim_thompson5910(35256)

Question 343742: a < b, then -a > -b why?
Click here to see answer by jim_thompson5910(35256)

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(75887)

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(24713)

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(35256)

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(32388)

Question 344503: solve inequality 2x+7/5<-9
Click here to see answer by ewatrrr(24785)

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(32388)

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(75887)

Question 345107: 2(3d-4)< 4 + 6d - 15
Click here to see answer by user_dude2008(1862)

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(20054)

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(12844)

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(35256)

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(32388)

Question 345359: Solve in inequality of (4x - 2)/7 < x + 1 and write it in inverval notation
Click here to see answer by mananth(16946)

Question 345364: Solve the inequality of -2y < 14
Click here to see answer by mananth(16946)

Question 345364: Solve the inequality of -2y < 14
Click here to see answer by rfer(16322)

Question 345366: Solve the inequality of 18(3 - x) > 60 - 15x
Click here to see answer by rfer(16322)

Question 345343: (3/8-5/2i)-(5/6+1/7i)
Click here to see answer by haileytucki(390)

Question 345391: determine whether the given number satisfies the inequality following it
4,3x - 5 < 7
Click here to see answer by rfer(16322)

Question 345398: 30 < - 6(x - 3) < 60
Click here to see answer by stanbon(75887)

Question 345401: Solve the inequality of (4x - 2)< x + 1
Click here to see answer by haileytucki(390)

Question 345401: Solve the inequality of (4x - 2)< x + 1
Click here to see answer by ewatrrr(24785)

Question 345403: 30 < 6(x - 3) < 60
Click here to see answer by haileytucki(390)

Question 345342: (3/2+1/3i)+(1/6-3/4i)
Click here to see answer by haileytucki(390)

Question 345341: (-8+4i)-(9-4i)
Click here to see answer by Fombitz(32388)

Question 345416: I have to solve the following nonlinear inequality and provide the solution in interval notation.
1) -x^2<-7x
2)x<5x+6/x
Click here to see answer by haileytucki(390)

Question 345428: Car selling. Ronald wants to sell his car through a broker who charges a commission of 10% of the selling price. Ronald still owes $11,025 on the car. Ronald must get enough to at least pay off the loan. What is the range of the selling price?

Click here to see answer by haileytucki(390)

Question 345430: Driving time. On Halley�s trip back to Bangor, she drove at an average speed of 55 mph every day and traveled between 330 and 495 miles per day. In what range was her daily driving time?

Click here to see answer by mananth(16946)

Question 345522: Solve and graph the compound inequality.
x+7<-3 or x+7>2
Click here to see answer by Fombitz(32388)

Question 345538: Solve by the substitution method.
5x+4y=7
-3x+y=7
Click here to see answer by Fombitz(32388)

Question 345535: Solve and graph.
1-3x>16 and 7x-2>47
Click here to see answer by ewatrrr(24785)

Question 345556: Solve the inequality of -3 and answer in interval notation.
Click here to see answer by solver91311(24713)

Question 345559: Solve the inequality of 11/12x < 11 and write it in interval notation.
Click here to see answer by solver91311(24713)

Question 345562: Solve the inequality of (11/12)x < 11 and write it in interval notation.
Click here to see answer by solver91311(24713)

Question 345549: (2�3 � 3�2)� + (2�3)� � (3�2)� + 2�3� � 3�2�
Click here to see answer by Fombitz(32388)

Question 345275: 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:
(-8+4i)-(9-4i)
Click here to see answer by ankor@dixie-net.com(22740)

Question 345558: Solve the inequality of 8x - 16 < 3x + 4x. Write the solution set in interval notation.
Click here to see answer by Fombitz(32388)

Question 345895: solve this please
2x-3>15 and 3-7x>17
Click here to see answer by rfer(16322)

Question 345896: solve this please
3m-2<7 or 2m+1>13
Click here to see answer by rfer(16322)

Question 345942: what is 2x+2>4x
Click here to see answer by haileytucki(390)

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