Questions on Algebra: Negative and Fractional exponents answered by real tutors!

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Question 51873: Graph y= 3x +5. Determine the slope of the line and its y intercept
Click here to see answer by rchill(405) About Me 

Question 51984: i need help on this :
-3[-1-2(-1-1)][-3(-2)-1]
can you show me step by step please.

Click here to see answer by checkley71(8403) About Me 

Question 52191: Fast food---if 4 out of 5 doctors perfer fast food then at a convention of 445 doctors--how many had fast food?
Click here to see answer by Nate(3500) About Me 

Question 52185: 4c-3(5c-2x+2)
Click here to see answer by rchill(405) About Me 

Question 52353: I am having trouble figuring this out. the problem is simple really there is just one little turn I can't figure out. a=40 and b=5 so here goes it is written in fraction form ans the first is -a/b, and 2nd is a/-b simple right now how do you figure the problem when the negative sign is right next to the fraction bar instead of next to the variable itself.


Click here to see answer by Earlsdon(6294) About Me 

Question 52510: im havig trouble understanding how to do this problem , could you show me how to do this?
-1/2 -3/2
(x+5) - (x+5)

Click here to see answer by stanbon(75887) About Me 

Question 52961: Give an exmple in which a rational number raised to a rational power is irrational.
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Question 52959: Rewrite each expression in two ways: (a) using rational exponents; (b) using only one radical sign.
The cube root of 2 times the fifth root of 2.

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Question 52957: Can you please explain to me how to do the problem -4.601 - (-5.09)= I came up with -9.691. That wasn't right. Thanks
Click here to see answer by funmath(2933) About Me 

Question 52956: Can you please explain to me how to solve 35 Divided by -7a= I came up with the answer -5a but my teacher said that wasn't right.
Thanks

Click here to see answer by funmath(2933) About Me 

Question 53233: I do not understand the process I am told k=2 but how did that come to be?
when I try to use other sites, the computer tells me variables can not be used as an exponent Thank you -Comicruler
solve for k
x^k-12=(x^2)^-k-3

Click here to see answer by venugopalramana(3286) About Me 

Question 53752: Ive been stuck on this problem for almost 2 weeks now. I just cannot seem to find an example related enough to convince me that I am doing this correctly. Can you please help me? The problem is:
(x^2y^-3z)^1/2 / x^1/2yz^-1/2
The answer Ive come to is
x1/y^3/2z^1/2 / x^1/2y1/z^2
am I even close??

Click here to see answer by Earlsdon(6294) About Me 

Question 53952: 3 over x-1 minus 1 over 2x+1 = 1
solve this

Click here to see answer by adav8266(2) About Me 

Question 53929: 3 friends, each with some cash, redistribute as follows; Ami gives enough money to Jan & Toy to double the amount that each has. Jan then gives enough to Ami &
Toy to double their amounts. Finally, Toy gives Ami & Jon enough to double their amounts. If Toy has $36 when they begin & $36 when they end, what is the total amount that all 3 friends have?

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 53494: Please help. The book isnt giving me enough guidance on this: Simplify
(x^2y^-3z)^1/2 / x^1/2yz^-1/2
Working the problem, Ive gotten it to:
x*1/y^2*z^1/2 /x^1/2*y/1/z^2 But I dont know where to go from here with the simplification process. The book doesnt have any examples like this. Any help would be greatly appreciated!

Click here to see answer by stanbon(75887) About Me 

Question 54612: Please help w/ the following exponential function:
The number of bacteria present in a culture after t minutes is given as B=100^ kt. if there are 6231 bacteria present after 11 minutes, find k.
Thank you, Aimee

Click here to see answer by stanbon(75887) About Me 

Question 54894: if y =7 when x=4, find y when x = 12.
Click here to see answer by checkley71(8403) About Me 

Question 54818: If the product 3/2.4/3.5/4.6/5....a/b = 9. what is the sum of a and b?
Click here to see answer by wgomero(28) About Me 

Question 54677: (-5)x(-n)=
Click here to see answer by stanbon(75887) About Me 

Question 55047: I am stuck on correct answer for:
if the sum of 3 consecutive integers is 36, what is the smallest of these integers?
I believe answer is 11 but I need to verify my work. Can you show me the breakdown to get correct resolve?

Click here to see answer by stanbon(75887) About Me 

Question 55045: I am stuck on correct answer for:
if the width of a rectangle is 3 inches less than its length and the perimeter of the rectangle is 94 inches, what is the length, in inches, of the rectangle?
I believe answer is 25 but I need to verify my work. Can you show me the breakdown to get correct resolve?

Click here to see answer by Nate(3500) About Me 

Question 55043: I am stuck on correct answer for:
If x = 3 and y = -2, then 7x - 3y over 2x + y =
I believe answer is 27 over 4 but I need to verify my work. Can you show me the breakdown to get correct resolve?

Click here to see answer by anjulasahay(30) About Me 

Question 55041: I am stuck on correct answer for:
3 over 2 - 5 over 6 =
I believe answer is 2 over 3 but I need to verify my work. Can you show me the breakdown to get correct resolve?

Click here to see answer by anjulasahay(30) About Me 

Question 54675: (-5)x(-2)=
Click here to see answer by funmath(2933) About Me 

Question 55766: 3x devided by 4 =9
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Question 55854: between 1970 and 1990, missouri's population increased at the rate of0.47%per year. thepopulation,p, in year t is given by
p = 4,903,000 * 1.0047t where t=0 corresponds to 1980. find the populationin 1970,1980, and 1990. i understand that 1980 = 4,903,000 but can't
figure out the formula to get the correct answers.

Click here to see answer by Cintchr(481) About Me 

Question 55972: 2x/5 + 6= x/5
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Question 55975: y-3/5 - 1 = y-5/4
Click here to see answer by rapaljer(4671) About Me 

Question 56159: Can you please help me solve this question?
1+1/x=90/x2
In words, one plus one over x equals 90 over x squared.

Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 56159: Can you please help me solve this question?
1+1/x=90/x2
In words, one plus one over x equals 90 over x squared.

Click here to see answer by stanbon(75887) About Me 

Question 56440: What is the solution to 5x - 1/2x = 18 please show the work.
What is the solution to -8x -2x = 15, please show the work.

Click here to see answer by checkley71(8403) About Me 

Question 56469: Please help me solve:
(6x^-3y^5)^2z^0
I can't have negative exponents. I thought I had this figured but...thank you

Click here to see answer by stanbon(75887) About Me 

Question 56622: Simplify. Express without using negative exponets. 1 (exponet)-4
Thank You!

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Question 56628: y<2y+3y
Thank You!!!

Click here to see answer by funmath(2933) About Me 

Question 56585: I do not understand how to solve the following:
x squared + 5x + 4 OVER (x + 3)squared DIVIDED BY x + 1 OVER x squared minus 9
Please show me how to go about solving this. Thank you.

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 56742: n^-2/n^3
Click here to see answer by funmath(2933) About Me 

Question 57040: How many real solutions does this equation have?
(x^2-9x+19)^(2x^3-x^2-10x)=1

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Question 56756: her score so far after 15holes is -2. if par for 15 holes is 63, what is her score?
Click here to see answer by rcmcc(152) About Me 

Question 57312: (-9)‾¾ Can you please help simplify this problem?
Thank you very much.

Click here to see answer by funmath(2933) About Me 

Question 57314: (16y‾¾ /t½)‾2 Please help me simplify this problem?
Thanks a Bunch!

Click here to see answer by funmath(2933) About Me 

Question 57589: -11/8x=44
Click here to see answer by checkley71(8403) About Me 

Question 57563: A store sells an item for 4/5 of the cost paid by the store plus the cost paid by the store. The idtem sells for $6.30. How much did the store pay?
Click here to see answer by rcmcc(152) About Me 

Question 57918: x to the positive 2 power times y to the negative 3 power
Click here to see answer by funmath(2933) About Me 

Question 58049: (a1/4b1/3)^3 (a1/6b2/3)^3
I have tried distributing the exponents to the top of the fraction and then adding the like terms. It just does not look right when I finish.

Click here to see answer by funmath(2933) About Me