







UFO speed in MPH from nearest galaxy in one year 
20210522 

Joe pose la question : If the next closest galaxy is 15 quadrillion miles away and there are 8760 hours
in one year; how fast would a UFO have to fly to travel from the next
galaxy, in MPH in one year ?
Google calculator gives this result: 1.7123288e+12
I don't understand what the "e+12" means.
How is that pronounced, ex. trillion, quadrillion etc..?
Harley lui répond. 





gcd(a^2 + b^2, a + b) 
20200119 

Roger pose la question : I am stuck with this problem: find the gcd(a^2+b^2, a+b), where a & b are relatively prime integers not both zero. Penny Nom lui répond. 





cos (3pi/2 x) 
20191120 

sam pose la question : 1. express the following as a trigonometric function of angle x for cos (3pi/2 x)
the answer in the textbook is sin x but i am unsure of the process to get the answer. Penny Nom lui répond. 





The domain of f + g 
20191016 

Angel pose la question : The domain of f+g when f(x)=8x+3 and g(x)=15x Penny Nom lui répond. 





f(x + 2) 
20190226 

a student pose la question : How do you use f(x) = 3x+1 to determine the transformed function of f(x + 2)? Penny Nom lui répond. 





y = g(x + 1) 
20170627 

Shamsudiin pose la question : HI there i am currently doing a level maths AS
I don't understand how to graph this Question y=g(x+1) i really need help please
please respond to this problem Penny Nom lui répond. 





y = mx + c and Ax + By + C = 0 
20161018 

Erick pose la question : please explain to me how to convert an equation from the form y=mx+c to Ax+By+C=o form. Penny Nom lui répond. 





tan15° 
20160411 

JOHN pose la question : find the exact value of tan15° in surd form. Penny Nom lui répond. 





Factor x^2 + y^2 
20150826 

Jerome pose la question : Factor: x^2+y^2 Penny Nom lui répond. 





The slope of the line y=2x+5 
20131229 

victoria pose la question : what is the slope of the line with the equation y=2x+5 Penny Nom lui répond. 





How can we draw the equation "x+y=1" in 3d? 
20130503 

shimaa pose la question : how can we draw the equation "x+y=1" in 3d Robert Dawson lui répond. 





A chart for y=mx+b 
20130311 

jacinda pose la question : how to make a chart for y=mx+b Penny Nom lui répond. 





Plotting y=f(x)+2 
20130121 

Gavin pose la question : how would you plot y=f(x)+2 Penny Nom lui répond. 





The equation of a line 
20120326 

Danielle pose la question : Hello, could you help me figure out what the equation of the line is in the form of Ax+By=C with the points (2,0) and (0,3)?
Thank You! Penny Nom lui répond. 





Extended real numbers 
20111212 

Justin pose la question : Hi there, I was wondering does +infinity=+infinity in the extended real number system? Basically, I was wondering does +infinity=+infinity since infinity and any extended real number (except +infinity) are less than +infinity?
Sincerely,
Justin Robert Dawson lui répond. 





1^3 + 2^3 + 3^3 +4^3 ... n^3 = ? 
20100129 

ireimaima pose la question : Hi..
Can u please help me with this question..
I find that when i test eg: n=2 for n (n+1) /4,
it seems that it does not giving me the right answer of 1^3 + 2^3 = 9
but 3/2... i'm confuse..can u please help me..thanks so much
Prove that:
1^3 + 2^3 + 3^3 +4^3………………………………..n^3 = n (n+1) /4 Penny Nom lui répond. 





f(x + h)f(x) 
20090907 

Marie pose la question : For each function defined as follows, find a.) f (x+h) b. f(x+h)f(x) c. [f(x+h) f(x)]/h.
Problem: f(x)= 1/ x^2. Harley Weston lui répond. 





A word problem involving y = mx + b 
20090424 

Devon pose la question : I need to put the following question in to y=mx+b form
I rent a gym for $150.00 for 30 students. Another time I rent the gym for @270.00 for 70 students. I need to also find a fixed rate. Stephen La Rocque lui répond. 





A line parallel to a given line 
20090218 

Lisa pose la question : I'm having a hard time understanding the concept of how to write an
equation of the line containing the given points and parallel to the given line.
Express the answer in the form of y=mx+b.
(7,9); 2x+5y=4. i would appreciate it alot if someone can show ne how
to do this. Thank you, Lisa Penny Nom lui répond. 





For how many positive integers n is n^2 + 96 is a perfect square? 
20071218 

Rajesh pose la question : For how many positive integers n is n^2 + 96 is a perfect square ? Penny Nom lui répond. 





Plotting a function 
20071206 

Paula pose la question : My son has a problem that says plot the point:
2x3y=9
I have explained to him that there must be a function for y in order to plot that point, but he doesn't think so. The question above that one says find the function for y, and I assume we should use that function. Am I wrong? Can we plot a point without a y function. Stephen La Rocque lui répond. 





y=mx+b 
20070529 

molly pose la question : Im having a problem with the y=mx+b for our homework we have a table that goes from 0 to 6 , 1 to 7 and 2 to 8 and we have to make a equation of that. Please help. Penny Nom lui répond. 





f(x), f(x) + 2, f(x +2) 
20010404 

Monica pose la question : Could you explain to me how one should go about graphing functions such as f(x), f(x+2), and so on. Also, how should you explain things such as constants and relationships among functions? Penny Nom lui répond. 





2^32 + 1 
20000408 

Un Etudiant pose la question : 2^{32} +1 can be divided by 641 , why? Claude Tradif lui répond. 

