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

Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)

Question 231515: I tried to use the calculator, but still can't come up with an answer. It is a multiple choice.
Q: In(1/3.14159)
A).4971
B)1.147
C)-1.1447
D)-0.4971
I am lost..I have other problems to do, please show me how you do this so I can do the rest of my work..Thank you
Click here to see answer by Alan3354(30993)

Question 231101: Trying to solve this equation for x: 9x^(2/3)-4x^(-4/3)=0
Step by step instructions would be great as I don't understand how to get rid of the powers - I know the answer is +/- 2/3
Thank you
Click here to see answer by ankor@dixie-net.com(15645)

Question 231656: simplify (256) 3/4 but the 3/4 is an exponet
Click here to see answer by rfer(12654)

Question 231719: how can we simplify this:
2L*C/(c^2 - v^2) = ?
Click here to see answer by solver91311(16872)

Question 231707: 14=n/3 -14
Click here to see answer by checkley77(12569)

Question 231849: (x3/y)-4

Click here to see answer by stanbon(57282)

Question 232148: What is negative 2 to the negative fourth power? Is there a difference if the negative 2 has parenthesis around it or not? Thanks!
Click here to see answer by rfer(12654)

Question 232498: rewrite the following with out an exponent
(2/7)-2
Click here to see answer by rapaljer(4667)

Question 232498: rewrite the following with out an exponent
(2/7)-2
Click here to see answer by jsmallt9(3296)

Question 232755: how do you solve for x in this problem: .30 = 7-50+45(1+x)^-.25
Click here to see answer by jsmallt9(3296)

Question 232755: how do you solve for x in this problem: .30 = 7-50+45(1+x)^-.25
Click here to see answer by Alan3354(30993)

Question 232918: Okay im not sure which category i would be choosing for this but its negitive numumbers as well as fractions , ill explain.
in this set of chips, each plain chip has a value of -1, and each striped chip has a value of 1.
theres 4 plain chips and 2 striped.
how do i solve this?
Click here to see answer by edjones(7569)

Question 233405: Regarding negative exponents. Please explain why 2^-2 evaluates to 1/2^2 =1/4, but (-2^3)^2 evaluates to 2^6=64. I do not understand why the second expression results in a whole number. bljones1944@charter.net
Click here to see answer by jsmallt9(3296)

Question 233493: 3^1/6 * 3^2/3 / 3^1/2
I wanted to show my attempt, but unable to type out my steps.
Thanks,
Nick
Click here to see answer by rfer(12654)

Question 233904: i don not understand this could you help me? my paper says simplify the expression. write your answer using exponents. 5^4 x 5^8
Click here to see answer by Alan3354(30993)

Question 233904: i don not understand this could you help me? my paper says simplify the expression. write your answer using exponents. 5^4 x 5^8
Click here to see answer by stanbon(57282)

Question 234014: I have a problem remembering how to perform the following equation. Please advise.
(-1/2)^-3
Click here to see answer by nyc_function(2733)

Question 234035: Please help me solve this expression
Click here to see answer by Alan3354(30993)

Question 234136: Fraction: 2/-2^-3 is supposed to be equal to 16.
But I don't get it.
Can someone explain the process for my understanding? I don't know
how to deal with negative exponents especially when it's in a fraction.
Click here to see answer by nyc_function(2733)

Question 234194: how do i plot a negative fraction?
Click here to see answer by solver91311(16872)

Question 234664: I really need help with this equation. (4.5)(x/20)=14
Click here to see answer by rfer(12654)

Question 235495: Use the sum of two cubes or the difference of two cubes pattern to factor the following.
I am totally lost and can not even start this problem
49) 27x³+64y³
Click here to see answer by solver91311(16872)

Question 235853: What is 7 to the negative fourth power
Click here to see answer by Theo(3458)

Question 236188: (square root 6mn^)3
Click here to see answer by Alan3354(30993)

Question 236644: |k|=7
Click here to see answer by user_dude2008(1861)

Question 236879: solve for x
6x+1/5=65

Click here to see answer by RAY100(1637)

Question 237010: use exponents to write an expression fro one billion (1,000,000,000)
Click here to see answer by thrasherlax74(11)

Question 237096: simplify each expression.
a-4 c0
Click here to see answer by rfer(12654)

Question 237477: -8+5t=-6

Click here to see answer by College Student(505)

Question 237477: -8+5t=-6

Click here to see answer by checkley77(12569)

Question 237527: Hi,my name is kuupeahi taliloa and I really need help on my math homework...can you help me?please..What is 8 to the 2nd power times -1?
Click here to see answer by College Student(505)

Question 237854: How to expand five to the negative second power
Click here to see answer by rfer(12654)

Question 237889: What Is The Multiplicative Inverse Of Negative 7
Click here to see answer by stanbon(57282)

Question 238135: Hi can someone help me with these problems,and show the work so I can try and figure how to do next problems. Thanks
1. Write an equivalent expression without using the grouping symbols: -(3x + 5)
2. Clear fractions or decimals, solve, and check: 1/2+4m=3m-5/2
3. Combine like terms, and write in descending order: 3/4 x^3+4x^2-x^3+7
Click here to see answer by solver91311(16872)

Question 238759: Please help (I hope this is the right section :-|
The question reads:
Place >,<,= between each of the following pairs to make true sentences.
a) 4/5 and 120/150
b) -6/5 BS -7/6
C) -4/20 AND 4/-20
a and c are equal (I beleive!!)
But I have no idea what BS means. Thanks for your help!

Click here to see answer by unlockmath(1599)

Question 239663: Equivalent expression without using the grouping symbols: -(3x +5)
Click here to see answer by stanbon(57282)

Question 239664: What is 2X10 to the negative 7th power?

Click here to see answer by stanbon(57282)

Question 239956: I need to use the variables a= -1 b= -2, c= -3, d= -4 and the answer needs to equal 27. Can you help me come up with solutions for this problem?
Click here to see answer by solver91311(16872)

Question 240353: I need help figuring out how to do this:
-2/7x = 1/5
I am using "/" as the fraction bar
Click here to see answer by vleith(2825)

Question 240446: i have but do i have to add them too together or no?
Click here to see answer by JimboP1977(308)

Question 240753: rewrite as a radical:
(2x+7)^5/2
Click here to see answer by solver91311(16872)

Question 240896: solve by the addition method 3x-2y=-1 2x-3y=-4
Click here to see answer by checkley77(12569)

Question 240338: (9/8)^-2 the 9/8 is of course a fraction and the ^-2 is for a negative exponent. I dont get these.
Click here to see answer by Alan3354(30993)

Question 240822: what is (-30)-2
Click here to see answer by College Student(505)

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