Tutors Answer Your Questions about Inequalities (FREE)
Question 66747: My web homework for the beginning of this semester is an algebra review. I have not had algebra in 3 or 4 years, which is the reason I need a little refresher. So here's the problem....
The absolute value of the quantity (x-2)>0.
I know one answer is 2, but the homework says there are 2 answers. If you could, please help me to remember how to do this!! Thanks so much for all of your help.
Click here to see answer by Nate(3500) |
Question 66753: 1. I need help in solving the following compound inequality. I also need to write solution set in interval notation and graph.
-1 (less than or equal to) 3-2x<11
2. I need to graph the following absolute value inequality:
|x+2y|(greater than or equal to) 6
3. I need to graph the following compound inequality: 3-xy+5
4. I need to determine whether -4 satisfies the following compound equality:
-3x>0 and 3x-4<11
Click here to see answer by stanbon(75887) |
Question 66753: 1. I need help in solving the following compound inequality. I also need to write solution set in interval notation and graph.
-1 (less than or equal to) 3-2x<11
2. I need to graph the following absolute value inequality:
|x+2y|(greater than or equal to) 6
3. I need to graph the following compound inequality: 3-xy+5
4. I need to determine whether -4 satisfies the following compound equality:
-3x>0 and 3x-4<11
Click here to see answer by Edwin McCravy(20054)  |
Question 66743: I need to write an inequality to represent the time it took to send a message for the following:
1. The first message sent from London to New York by sailing ship took up to 9 weeks.
2. The first transatlantic telegraph was in 1858 and took less than 3 seconds.
Click here to see answer by stanbon(75887) |
Question 67764: bus# 17 runs from apple street to ellis avenue making 3 stops in between. at bonz avenue, 2 people got off and 5 people got on the bus. at crump road, half the people on the bus got off and 4 people got on. at dane square, 3 people got off and 1 person got on. at the finail stop, the remaining 12 people got off. how many people were on the bus when it left apple street?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 67976: Could someone please please help me with this:
f(x)= (x²-1)(x-1).
1.Show why f(x)is greater or equal to 0 in each of the following cases:
a)x>1
b)0
c)-1
2.Deduce that x^3+1>x^2+x for all x>-1.
Thank you very for your great help!!!!!!!
Click here to see answer by Edwin McCravy(20054)  |
Question 67977: Could someone please please helpme this:
1. Let a,b,c be the three distinct positive real numbers.
Thank you very for your great help!!!!!!!
a) Prove that a^3+b^3>a^2xb+b^2xa.
b) Write down , without proving them, similar inequalities for (a^3+c^3) and (b^3+c^3).
c) Hence, or otherwise, prove that 3(a^3+b^3+c^3)>(a^2+b^2+c^2)(a+b+c)
2.State why (a-b)^2(a^2+b^2) is non-negative, for all a,b belong to R. Deduce that a^4+b^4is greater or equal to 2(a^3xb-a^2xb^2+axb^3).
Thanks a million!!! I am waiting for a solution for ages. Please help me , i am desperate...
Click here to see answer by venugopalramana(3286) |
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