Tutors Answer Your Questions about Exponents (FREE)
Question 30449: I'm not sure if I am posting this in the right area. But I need to:
For the indicated functions f and g, find the functions f+g,f-g,fg, and f/g and find their domains.
f(x)=3x g(x)=x^2+4
Could you show me how this is done. I did it using word and cannot paste the answer in here and need something to check my work by.
Thank you so much!
Click here to see answer by longjonsilver(2297)   |
Question 30468: First, I'm told that -X can be read as -1*X where the 1 is not written because it is "understood" and when X=9, -x= -1* +9 or -9. It would also follow that if X=-9 then -X=-1*-9 or +9.
I'm also told that a negetive number times a negetive number yeilds a positive answer. I know that 6^2=36 so it makes sense that
-6^2 would mean -6*-6 or +36.
My problem is that when I enter -6^2 into my graphing calculator, I get -36. When I enter it into my scientific calculator I get +36. A teacher explained that I should read -6 like I read -X, as -1*+6^2= -36. Another teacher explained that -6^2 means (-6)*(-6)and that the answer is infact +36. Which teacher and which calculator is right?
Click here to see answer by mbarugel(146) |
Question 30468: First, I'm told that -X can be read as -1*X where the 1 is not written because it is "understood" and when X=9, -x= -1* +9 or -9. It would also follow that if X=-9 then -X=-1*-9 or +9.
I'm also told that a negetive number times a negetive number yeilds a positive answer. I know that 6^2=36 so it makes sense that
-6^2 would mean -6*-6 or +36.
My problem is that when I enter -6^2 into my graphing calculator, I get -36. When I enter it into my scientific calculator I get +36. A teacher explained that I should read -6 like I read -X, as -1*+6^2= -36. Another teacher explained that -6^2 means (-6)*(-6)and that the answer is infact +36. Which teacher and which calculator is right?
Click here to see answer by sdmmadam@yahoo.com(530) |
Question 30468: First, I'm told that -X can be read as -1*X where the 1 is not written because it is "understood" and when X=9, -x= -1* +9 or -9. It would also follow that if X=-9 then -X=-1*-9 or +9.
I'm also told that a negetive number times a negetive number yeilds a positive answer. I know that 6^2=36 so it makes sense that
-6^2 would mean -6*-6 or +36.
My problem is that when I enter -6^2 into my graphing calculator, I get -36. When I enter it into my scientific calculator I get +36. A teacher explained that I should read -6 like I read -X, as -1*+6^2= -36. Another teacher explained that -6^2 means (-6)*(-6)and that the answer is infact +36. Which teacher and which calculator is right?
Click here to see answer by Earlsdon(6287) |
Question 30825: i tried to get this problem i couldn't figure it out it is 3over8times5over6 i do not know how to multiply fractions can u please help as soon as possible it is on my homework and i need to turn it in tomorrow
Thank you very much
Click here to see answer by Nate(3500) |
Question 30832: i do not know how to do this problem it is 4and 1half times 1 and 2 thirds this is really important to me it is my homework which i have to turn in tomorrow please write back as soon as possible thank you
Click here to see answer by Nate(3500) |
Question 31212: i do not know how to do this problem and it is on my homework which i have to turn in tomorrow so can u help me as soon as possible the problem is: find the mode or modes of 31, 27, 15, 31, 24, 13, 30, 24, 18, 35, 28, 24, thank you very much if u can help me
Click here to see answer by Earlsdon(6287) |
Question 31197: i tried so hard to get this problem but i can't it is: find the median for 110, 115, 109, 110, 116, 113, 112, 116, 110, 106,113 i do not know how to find the median thank you for your help
Click here to see answer by Earlsdon(6287) |
Question 31259: Ok. I need help. This is the question.
Find all possible values for x and y to make 154. You must add another number to the equation. For example,
X=7
Y=7
10x+y+10y+x=154 or 77+77=154. I really need help on this one...and soon.
Thanks for your time,
Sincerly,
Shizuna.
Click here to see answer by checkley71(8403) |
Question 31774: 1.A culture of bacteria doubles in size every half-hour. If the colony contained 1800 bacteria at noon, how many bacteria will the cutlure contain at 3:00
2.A trapezoid has a height of 9xy centimeters. Its shorter base is 14y centimeters, and its longer base is 28y. Use the formula A=1/2(B1+B2)h, where B1 and B2 are the bases and h is the height to find the area of the trapezoid.
Click here to see answer by atif.muhammad(135) |
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