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Tutors Answer Your Questions about Exponents (FREE)
Question 23998: the question is asking you to:
Evaluate each expression if x= 3, y= -2, and z= 4
# 1) x exponent -4 so x-4 but the -4 is in exponential form
please help me, i dont understand it, and the homework is due tommorow, im in the 7th grade in advanced math(pre-algebra), and i need help with this prblem because i was absent, i tried to call a friend but they weren't home
Click here to see answer by elima(1433)   |
Question 24646: At noon, there were 1000 bacteria in a culture dish. The formula for the growth of the bacteria is n = l000(2a), where n is the number of bacteria, and a is the number of hours the culture has been growing. How many bacteria will there be at 18:00, assuming none of the culture die? a is an exponent.
Simplify
(k2lm2)(-kn)2 ..the 2's are exponents.
Click here to see answer by quentin252(19) |
Question 24633: I need assistance with this problem please.
(2x^-4y3/xy^2)^-2
Simplify, leaving only positive exponents.
Should I flip the problem around to make the negative 4 positive, then multiply by the -2?? I can not get an answer with all positive exponents.
Thanks for the help!
Click here to see answer by longjonsilver(2297)  |
Question 25146: I am having trouble with the order I am suppose to work problems. I am also having trouble figuring out when I am suppose to multiply and subtract. Example problem: {3/4}^2 - {1/2}^3 divided by 3/5
The answer is 17/48 (seventeen over 48) can't figure out how they got it.
Click here to see answer by longjonsilver(2297) |
Question 25397: we are told to carry out the equation. the answer is to be expressed to the proper number of significant figures
0.786 x 10`7(neg. 7exponent)
__________
0.47 x 10 7 (+7exponent)
this is a division problem
I am struggling through this chem class. I haven't had algebra or chem in 13 yrs. PLEASE help
Click here to see answer by longjonsilver(2297) |
Question 25691: I need help solving this problem  solve for X.
This is how I tried to solve it, I tried two way but I am unsure
2X^2=288
(2x)(2x)=288
4X=288
X=72
Or I also tried this way
2*X^2=288
2*(X)(X)=288
2X=288
2X/2=288/2
X=144
Click here to see answer by Earlsdon(4900) |
Question 27382: It has been alot of years, can you tell me?
1 = 1+ d\33 how do I solve for d.
2 = 1+ d\33 etc.
do not remember how do get rid of the one on the right side of the equation and to get rid of the /33 if I have to multiply it by the one on the right side as well as the d and the left side as well? tks//mark..
Click here to see answer by wuwei96815(245) |
Question 28164: Earlier I asked why any number that has "zero" as the exponent equals 1. It was answered by saying that the answer will always be 1. But my question is WHY is the answer always one. An exponent tells you how many times to multiply a number. If that number is multiplied to the 2nd power, then you would multiply it twice. If it is to the zero power, then it should be multiplied zero times, but the answer is "1". WHY is this?
Click here to see answer by longjonsilver(2297) |
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