inequalities

1. Solving non linear inequalities

I'm so screwed lol
2. weird inequalities problem with reciprocals on both sides (inequalities)

This is question number 9 of James Stewart Mathematics for Precalculus 6th Edition I already know the method where you substitute every single value from S into the equation but I was wondering if there was just a way to simplify it
3. Solving higher dimensional systems of inequalities

Solving a 2-dimensional system of inequalities is simple enough, but it occurred to me the other day that I don't really know how to go about solving higher dimensional systems. The problem I was tinkering around with was to find (preferably integer) numbers, a, b, c, d, x, y and z, such that...
4. inequalities

may i know what's wrong with my working? the correct ans is n<9.66, n>64.69
5. Inequalities?

A company make two types of space-savers, english and italian. Each english requires 3 hours, 2 hours and 2 hours, while each italian requires 2 hours, 1 hour and 4 hours for cutting, assembling, finishing respectively. The company has 300 hours available for cutting, 240 for assembling and...
6. inequalities and exponents

Hi all, I'm trying to find the interval for this inequality: 2^x<x^2 Obviously the x-squared portion is easy. So I've got 2^x=x^2 Can you go xlog2 = 2logx?
7. Logarithm inequalities

Hello, I've trouble solving "graph log2x<0" how do i go about doing this? I know that log2x=y is equivalent to 2^y=x. However, the inequality sign and the <0 makes it complicated. The given answer is 1>x>0.
8. inequalities

By means of graph, solve the inequality tan2x+1≤4 I’ve tried like (2tanx)/(1-tan2) -3≤0 then (3tan2x+2tanx-3)/(1+tanx)(1-tanx) ≤0 … can anyone point out my mistake?
9. Equations, Formulas, and Inequalities (A few problems)

Can anybody work this problem out? (Headbang) I would really appreciate it if you can work it out step-by-step so I can completely understand how you worked this problem out. The problem states: Solve for r Thanks guys
10. Solving two inequalities with three variables

Hi everyone, How can I solve two inequalities with three variables like the following: x+y+0.94z>=0.9 x+y+0.94z<=1 I need it to be something like x+y+0.94=(some value). Maybe using constraints?
11. Series of Inequalities

First off, this is a real world problem so I do have more information if necessary, but I feel like this can be solved with the info provided. Is there a possible way to solve this or do I have to just trial and error it? 157.5 < a < 315 315 < b < 472.5 787.5 < c < 1102.5 a + b + c = 1575...
12. inequalities of rational expressions

referring to the photo attached, can anyone expalin and give suitable numerical example please? i couldnt understand the notes.
13. Solving set of inequalities

Hi everyone, I've the following set of inequalities: x+y+z=1 x+y+0.94z>=0.9 x+y+0.94z<=1 x+y+0.54z>=0.6 x+y+0.54z<=0.75 x+0.664y+0.3130z>=0.4 x+0.664y+0.3130z<=0.55 x+0.26y+0.228z>=0.2 x+0.26y+0.228z<=0.35 0.7360x+0.176y+0.09z>=0.12 0.7360x+0.176y+0.09z<=0.22 0.401x+0.05y+0.031z>=0.05...
14. Among all rectangular solids defined by the inequalities find one with greatest flux

Among all rectangular solids defined by the inequalities 0 ≤ x ≤ a, 0 ≤ y ≤ b, 0 ≤ z ≤ 1, find the one for which the outward flux of F = (−x^2 − 4xy)i − 6yzj + 12zk outward through the six sides is greatest. What is this maximum flux? I am not sure how to proceed.
15. solve for x; modulus inequalities

(a). -2|x-2|<-7 (b). |2x+1|>|-x+2|
16. Inequalities

Hi, I am extremely confused about inequalities and would appreciate it if someone could help me out. I am not sure how to even phrase what is confusing me so I'll throw out a few example questions: x^2 - 5x - 14 > 0 I suspect that for the 2nd and 3rd terms the factors would be (x+7) and...
17. Need help solving inequalities and more..

I just can't get my head around solving the following inequalities: 4x+5 < (-3x-2)/2 (16-3x)/3 > 2(x+4) /5 Someone please help me and show me how I do this? I need to have an assignment finished by tomorrow but I just don't understand it because my teacher hasn't explained it properly :( Also...
18. Proof by Induction with Inequalities

I'm having a lot of trouble with the induction step of the following proof. I really just don't even know how to start manipulating the inequality. Any help would be appreciated. Thanks. Show that (n+1)(n-1) ≤ nn for all n>0.
19. Inequalities with Factorials

Can one solve inequalities with factorials, without simply guessing with a calculator? A common example: n! > 1000 Obviously, I could simply calculate with values of N until I get one that works. But I'm wondering if there is a more direct way.
20. inequality problem and inequalities Help Please!

Hello to all friends of the mathhelpforum I'm new in this community. Thank you! :D I would like to help me with this exercise, I have to deliver today (Doh) : The temperatures in a 24 hour period between -4 ° F and 23 ° F, What was the variation in Celsius? (use F = 9/5 C +32)