







The modulus of a complex number 
20160729 

Cheyenne pose la question : There's a question on my Summer Assignment I cant figure out. Here it is:
Find the absolute Value of the complex number. 5i
Please help? Penny Nom lui répond. 





What is the value of 2((i)^(1/2))? 
20130722 

Delilah pose la question : What is the value of 2((i)^(1/2)) ?
i.e. absolute value of 2 multiplied by square root of i. Penny Nom lui répond. 





5<2x+1<1 
20121111 

Rahul pose la question : How does 5<2x+1<1 changes to 1<2x+1<5. What is the rule?
Can we apply absolute value function throughout the first inequality i.e. can we say 5<2x+1<1. But then it becomes 5<2x+1<1 which is impossible because 5 is not less than 1. Penny Nom lui répond. 





The greatest value of 5 –  x – 3 
20110116 

pranav pose la question : What is the greatest value of 5 –  x – 3  for any integral value of x.
< br />
PRANAVM Penny Nom lui répond. 





Linear inequalities with absolute values 
20101201 

ryan pose la question : Good day!
We we're given this assignment in algebra concerning linear inequalities with absolute value.
In this number I'm confused how to isolate the absolute value, considering there is a variable in the absolute value and there is a variable in the outside.
2+5 43t+t ≤ 34t Penny Nom lui répond. 





x+ 3 = x1 
20100921 

Jack pose la question : x+ 3 = x1 Penny Nom lui répond. 





Modelling the roof of a house 
20100323 

Sandi pose la question : This question has been haunting my dreams at night. It states the cross section of the roof of a house is modelled by the function y= 5\12x12+5, where y>0 or y. Now I'm suppose to graph the function. b) Find the slope, height, length of sides, and base of the isosceles triangle. c)Explain what transformation must be applied to the graph of y=x to obtain the graph of y= 5\12x12+5, where y>0 or y=0. 1st I put the equation into my calculator and graphed it. I got 10 for the height. We have had 2 sub teachers this past week. The first one told me the height should be 12 the other one told me 5. So I'm really confused. If I use my 10 units as height and the Pythagorean Theorem I get my sides to be 26 units the base 48 and my slope I calc to be 5/12. Both teachers are pretty sure I'm wrong and they are right but we all have different answers. Please help put this problem to rest so I can rest soundly at night. Thank you for your time. Penny Nom lui répond. 





34 
20100210 

Nick pose la question : I have another question. This is how i solved it and i know its suppose to be a negative.
z= 34 Penny Nom lui répond. 





f(x) = 3x  6 + 1 
20091026 

kelsey pose la question : find the coordinates of the vertex f(x)= l3x6l + 1 Penny Nom lui répond. 





1/(x+1) <1 
20090516 

Nazrul pose la question : What is the solution of absolute value of (1/(x+1))<1? Please explain. Stephen La Rocque lui répond. 





y = x  4 
20090128 

tiana pose la question : how do you find where to plot Y in a problem that states y=x 4? Robert Dawson and Penny Nom lui répond. 





Absolute value 
20081104 

Shane pose la question : What is the absolute value of 4 Penny Nom lui répond. 





Extraneous solutions 
20080925 

crystal pose la question : /6x+7/=5x+2 Penny Nom lui répond. 





Absolute value 
20080124 

Cara pose la question : Give the absolute value of this equation.
{3 + 1}  {5  7}
note: the brackets are the absolute value lines. Penny Nom lui répond. 





sinx and cosx 
20070625 

Mac pose la question : Can anyone tell me whether sinx and cosx is differentiable at x=0 ?
As far as i know, cos(x) and sin(x) is differentiable at all x. Penny Nom and Stephen La Rocque lui répond. 





Continuity of y = x 
20070502 

moulipriya pose la question : Is the curve y =  x  continuous everywhere? Penny Nom lui répond. 





Write the interval in absolute value notation 
20070320 

Timothy pose la question : 1. Write interval in absolute value notation
i) xE[0,9]
ii) xE[2,20] Penny Nom lui répond. 





The absolute value of imaginary and complex numbers 
20061211 

Keith pose la question : i don't get how to find the absolute value of imaginary and complex numbers here is an examples from the text book the answers are given but they don't show the work so i can follow along just show me the work please and explain how it is done
problem 3+4i Stephen La Rocque and Penny Nom lui répond. 





y = x  10 
20061103 

Pam pose la question : what is the process for finding the vertex point for an equation such as this, y= x  10. Penny Nom lui répond. 





Absolute Value vs. Standard Deviation ? 
20060424 

Sonia pose la question : Why we don't just take the average of the absolute value of difference scores (use the mean deviation) to describe variability instead of calculating the standard deviation? Claude Tardif lui répond. 





ax+b = cx + d 
20050322 

Angel pose la question :
ax+b = cx + d
how to show sometimes the above has 2 roots, sometimes 1 root and sometimes
no roots. Hopelessly lost on how to start...
Penny Nom lui répond. 





An ineqlality with absolute values 
20040705 

Uneeza pose la question : abs(x^{2}  4x) > 3 Claude Tardif lui répond. 





x^2  12x = 8 
20040124 

Sherre pose la question : x^{2}  12x = 8 Penny Nom lui répond. 





Absolute value 
20030923 

Crystal pose la question : I am trying very hard to understand Absolute Value, and I cannot seem to grasp the idea. I do not know why we use it, what the point of it is. I do not know how to use it. I know that it is always positive or zero, and I assume it relates to distance, but how can you use it in equations. Please explain it to me as simply as possible, thank you. Walter Whiteley lui répond. 





x+3 = 15x 
20030719 

Nathan pose la question : Without the use of trial and error, is there a way of solving for x where x + 3 = 15x? I know that x = 0.1875, but how do I find whether x + 3 is positive or not if I did not have this information (In other words, how would I solve whether the xvalue was 3 or less, or if it was more than 3)? Claude Tardif and Penny Nom lui répond. 





 n + 4  +  3  2n  = 16 
20020524 

Randall pose la question : I don't seem to be able to solve this:  n + 4  +  3  2n  = 16 Penny Nom lui répond. 





Linear regression 
20020116 

Murray pose la question : If you have a set of coordinates (x[1],y[1]),(x[2],y[2]),...,(x[n],y[n]),find the value of m and b for which SIGMA[from 1 to m=n]AbsoluteValue(y[m]m*x[m]b) is at its absolute minimum. Harley Weston lui répond. 





Absolute Value 
20011014 

Susan pose la question : I am a homebound teacher, and my nineth grade algebra I student is having trouble understanding absolute value. Please send me an idea about how to best help her. She may be out of the classroom the entire year. Chris Fisher lui répond. 





A linear inequality 
20010917 

Eric pose la question : How can I solve x + y + x  y< =6? Penny Nom lui répond. 





The Mean Value Theorem 
20010723 

Corrie pose la question : I need to find if the mean value theorem exists. and if so, find all values c guaranteed by the theorem. f(x) = x^{2}25 on the interval [10,0] Harley Weston lui répond. 





The domain of the derivative 
20010222 

Wayne pose la question : I know that the domain of f'(x) is a subset of the domain of f(x). Is it necessarily true that the subset will have at most one less element than the domain of the original function? Harley Wesston lui répond. 





The smaller of a and b 
20000914 

Jenna pose la question : For any two real numbers, a and b, give a mathematical expression in terms of a and b that will yield the smaller of the two numbers. Your expression should work regardless of whether a>b, a Penny Nom lui répond. 





Two geometry problems 
20000909 

Becky pose la question : What are all the real values of x that are solutions for the inequality [x2] < 6? ( it's less than or equal to) What is the distance between the points with (x,y) coordinates (3,2) and (3,1)? Peny Nom lui répond. 





Solving an equation 
20000826 

Patrick pose la question : My question is how would u do a problem like this.......... [2x37] =15?....u have to solve it for absolute value equations....???? Harley Weston lui répond. 





PreCalculus 
20000809 

Angela pose la question : Use absolute values to define the interval or pair of intervals on the real line.
<  ]    [ >
18 19 20 21 22 23 24 25 26
A car is moving at the rate of 50 miles per hour, and the diameter of its wheels is 2.5 feet. a) Find the number of revolutions per minute that the wheels are rotating. b) Find the angular speed of the wheels in radians per minute. Harley Weston lui répond. 





Taxicab geometry 
20000116 

Jack pose la question : Im doing an investigation entitled 'taxicab geometry', ive attempted it and have done most of the practical part of it. But i cant seem to see the equation behind it all. please guide me in the right direction. They provide a regular grid with regular horizontal and vertical lines. The lines are roads and the actual squares are blocks of hoouses/ buildings. In taxicab geometry the distance between place A & B is worked out by adding together the horizontal and vertical distances. each square is counted as i unit. Part 1 (I've done this) A taxix cab firm is based at A. the posistion B is 7 units away from A. investigate all the posistions of B at 7 units. investigate for different distances. . . . Penny Nom lui répond. 





Absolute value 
19991229 

Alex Waller pose la question : What are some practical applications for absolute value? Harley Weston lui répond. 





Inequalities and absolute values 
19991207 

Austin Cline pose la question : Solve for x: The absolute value of x1 is less than or equal to the absolute value of x2 Harley Weston lui répond. 





62x<4 
19991020 

Tchilco pose la question : Solve 62x<4 Harley Weston lui répond. 





Absolute value of i 
19990106 

Wayne Bagley pose la question : I would like to know what is the absolute value of i. I need an answer suitable for the secondary level. Harley Weston lui répond. 





Two Questions 
19971028 

Melissa Kelley pose la question : I would appreciate any help you could give me.  Why isn't 1 a prime number?
 How can the absolute value of a number be negative?
Penny Nom lui répond. 





A Limit Problem 
19970916 

Robert Reny pose la question : what is the limit, as x approaches 0, of 3x/2x[x]? [] means absolute value. Harley Weston lui répond. 

