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

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Question 8879: If 4^(1/5) = x, then
a. x * x * x * x * x = 4
b. 1/(x * x * x * x * x) = 4
c. 4 * 4 * 4 * 4 * 4 = x
d. 1/(4 * 4 * 4 * 4 * 4) = x

Click here to see answer by Abbey(339) About Me 

Question 9044: Can you help?
4^-1x^2y^-3/6^-1x^-1y^2 simplify
I got 3x^3/2y^5 or 1x^3/2y^5
How far off am I?

Click here to see answer by longjonsilver(2297) About Me 

Question 9224: 6^-2y^3z^-2/-2x^4y
please simplify and write the answer without negative exponents

Click here to see answer by gsmani_iyer(201) About Me 

Question 9348: I need some refreshing. I have a problem figuring out some of the rules and properties of negative exponents. As an example: (-3y^-1)^-1
I'm not concerned with the answer, as much as I am on how and why do do the steps to solve it.

Click here to see answer by longjonsilver(2297) About Me 

Question 9350: -18x=-45
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Question 9736: Simplify and write your answer witout negative exponents: +%28-2x%5E2y%5E-3%29%5E-2%283x%5E-1y%29%5E-4+%2F+%286xy%5E2%29%5E-1+
Click here to see answer by longjonsilver(2297) About Me 

Question 9767: Its been along time. Could you help me with 3.45 to the x power equals 8. solve for x?
Click here to see answer by Earlsdon(6294) About Me 

Question 10081: x to the 5th power x5 to the 3rd power (x5)3
Click here to see answer by askmemath(368) About Me 
Question 10081: x to the 5th power x5 to the 3rd power (x5)3
Click here to see answer by khwang(438) About Me 
Question 10081: x to the 5th power x5 to the 3rd power (x5)3
Click here to see answer by rapaljer(4671) About Me 

Question 10253: I am trying to help my son with his algebra homework but never really understood it myself. Can you please explain how you solve negative and fraction problems. One such problem is x/-4 + 5 =1
thanks!

Click here to see answer by rapaljer(4671) About Me 

Question 10294: wonder if i am at the right place if not please direct me tell me is this correct please (-12)+5-(-7)=-12+5+7=1-12+12=0 this is what my teacher say i cant make out how it goes thank you.
Click here to see answer by bonster(299) About Me 

Question 10286: 13X+(-6)(4X)
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Question 11384: Why does a positive integer multiplied by a negative integer equal a negative integer? I need the answer by monday.
Click here to see answer by elima(1433) About Me 

Question 11731: A charged particle moves from 0.2m to 0.5m from a fixed reference point in 0.5us. Find its average speed during that interval (1us=10^-6 s)
+%280.5m-0.2m%29%2F%280.5x10%5E-6%2As%29+
I tried to figure it out and here is what I did
+%280.3%29%2F%28%280.5%29%2F%28%281%29%2F%2810%5E6%29%29%29+

+%280.3%29%2F%28%280.5%29%2F%280.000001%29%29+

+%280.3%29%2F%28500000%29+

+%280.3%29%2F%280.0000006%29+
Now I can tell by looking in the answer book that the answer is:
+6%2A10%5E5+m/s
when I see this answer I cant help but think not only am I doing it wrong but its probably pretty simple... unfortunately the books guide and examples are not helping me to understand how to do the problem. The reason I am probably not understanding is the book is a introductory caclulus dealing with limits the section I am on is for "instantaneous speed of an object" and I am most likely not remembering how to do something that is covered in earlier maths like algebra.
any help or guidance is greatly appreciated.

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

Question 12035: 1. n+7+y+2+z
2. [-12+(-18)]+3
3 h+6-(-4+h)
4. (-8)n+5+16n-11
5. 5(n+2)+2
6. -3(-2n-7y)
7. 12u-2v-6u-4v
8. -1/6(42n-30y)

Click here to see answer by rapaljer(4671) About Me 

Question 12346: I have to graph the function y=e where "1/x" is the fractional exponent of "e". I have plugged in and graphed it for the positive integers, but I am confused about how to get answers for the negative integers. What does e^1/-2 for example look like? I know that with fractional exponents, you use the bottom number as the root and the top as the exponent, but how do you have a negative root of a number, say a negative square or cube of the number? (I know it is different from negative numbers under the radicand, which become imaginary).
Thank you!

Click here to see answer by longjonsilver(2297) About Me 

Question 12405: please solve and show process for:
2/7x-1/2x=3/4x+1

Click here to see answer by slksil001(7) About Me 

Question 12477: 1.0= (84.44%-x)/44.43%
How do I get "x" to one side?

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

Question 12977: how do I solve 7 to the -4 exponent. what is the answer?
Click here to see answer by Earlsdon(6294) About Me 

Question 7252: please reduce the fraction. (-20)(t^5)(u^2)(v^3) / (48)(t^7)(u^4)(v)
thank you!!

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Question 13376: Please help...(a^2)a^1/2
Click here to see answer by rapaljer(4671) About Me 

Question 13401: Please help me solve this equation +8y%28y%2F4%29+
I am spoce to be using the properties to simplify expressions.
I am not quite sure what to do could you help please!!!!!!!!!!!!
Single mom going back to collage.

Click here to see answer by askmemath(368) About Me 

Question 13402: Help me Please I am stuck on this equation and dont know where to turn.
I need to reduce the fraction to the lowest term.
++121%2F132++ Could some one help me with this one. PLEASE
Thanks again
Kendle

Click here to see answer by askmemath(368) About Me 

Question 13515: Could you please help me on mulitiplying and dividing negative numbers and the fraction like ones. Thank You this is a big help to me!
Click here to see answer by elima(1433) About Me 

Question 13802: Dear sir/madam,
Would you mind helping me to solve this equation and to get the value of r?
4r-2000r^-2=0
I calculated the following but know it is incorrect:
4r-2000r^-2=0
4r^-2(r^3-500)=0
Therefore,
4r^-2=0 or r^3-500=0
4/r^2=0 r^3=500
1/r^2=0 r=500^1/3
r^2=1/0 r=7.94
I can't continue on the left, because 1/0 is error. I only got one of the values of r is 7.94, but I could't get the other value of r.
Please reply soon and many thanks for your kind assistance.
On Ki


Click here to see answer by longjonsilver(2297) About Me 

Question 14237: Simplify and factor
9
___
x+4
____________________________
2 - 5
___ _____
x-4 - x^2-16

Click here to see answer by rahman(247) About Me 

Question 14410: You are picking up a friend and going to a concert. Your friend lives 3 miles west of your house and the concert is 21 miles east of your friends house. When you are at the concert, how far away from home are you?
How can I figure this out please help!

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Question 14477: QUESTION: Conor is scuba diving at a depth of 52.8 feet below sea level. 30 mins later, he is at a depth of 40 feet below sea level. What is his change in depth? Did he go up or down?
PLEASE HELP

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Question 14551: PLEASE HELP!!!!!You are playing 3-hole golf. On the first hole you score 1 under par, on the second hole you score 2 over par, and on the third hole you score 1 under par. What was your score for the game? (If you are at an even par your score is zero. In golf the total score is given as the number of strokes above or below par, expected score.)
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Click here to see answer by Alwayscheerful(414) About Me 

Question 14474: QUESTION: Conor is scuba diving at a depth of 52.8 feet below sea level. Thiry mins later, he is at a depth of 40 feet below sea level. What is his change in depth? Did he go up or down?
Click here to see answer by Alwayscheerful(414) About Me 

Question 14928: The question is to solve the equation by "multiply and then subtract" and "subtract and then multiply". It doesn't make sense. 1/8x-5=3
There are 4 of these type questions in the homework

Click here to see answer by longjonsilver(2297) About Me 

Question 15208: does a negative number x a negative number equal a positive number?
ex: -4x-4=
If so, can you explain the formula? Thank you

Click here to see answer by elima(1433) About Me 

Question 16346: I have a problem 3x^0+(3x)^0. I am having a hard time figuring this problem out. Your help would greatly be appreicated.
Click here to see answer by rapaljer(4671) About Me 

Question 16466: (4x^-1y^-3)(7x^2y). If you could please help with this one. The negative exponent very easy for me to remember things..YOur help is greatly apreciated.
Click here to see answer by Earlsdon(6294) About Me 

Question 16721: x to the second power minus 8x
x= -3
Thanks!
Lainey

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Question 16840: Simplify: y to the 4th power times y to the -2nd power. What are the steps you take to solve?
Click here to see answer by piglet162431(90) About Me 

Question 17043: I need help with
4x+-9=7x+12

Click here to see answer by tjnw79(57) About Me 

Question 17500: my equation is (-2\x)5th power (sorry, i can't find the "hat" symbol to use.
I'm shown by my answer key that the answer is -32 over x 5th power. i can get the -32 but i can't figure out why it's -32 over x to the 5th power. I would appreciate any help.

Click here to see answer by askmemath(368) About Me 

Question 17609: Please help me simplify this equation. I don't understand it.
35x + 4 over -5

Click here to see answer by xcentaur(357) About Me 

Question 17855: May I have some help on this please? I'm just not getting it.:
(4-8x)(4+8x)=
This is what I've tried:
4(4) + 4(-8) + (-8)4 +(-8)x=16+32x-32x+32x=16+32x

Click here to see answer by LilSkittleMd(119) About Me 

Question 18740: Will someone please help me with this:
Simplify:
(4x^5/2x^2)-4 this is what I tried:
=2x^3 neg 4th power

Click here to see answer by xcentaur(357) About Me 

Question 18705: hey ths is ashley i have u major qustion will you help me on this question -2/5(10x-25)=8x+4
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Question 18706: hey ths is ashley i have u major qustion will you help me on this question -2/5(10x-25)=8x+4
Click here to see answer by xcentaur(357) About Me 

Question 18865: I need help, please!
Simplify
%28x%5E-2-y%5E-2%29%2F%28x%5E-1-y%5E-1%29

Click here to see answer by xcentaur(357) About Me