Questions on Algebra: Exponents and operations on exponents answered by real tutors!

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Algebra: Exponents and operations on exponents

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Question 134402: How would I do these problems?
(1/a)^-1 = a
a^-1/a^0 = 1/a
And is this problem true?
(4 + 5)^-1 = 4^-1 + 5^-1
Please show all work. Thank you!!!
Click here to see answer by ankor@dixie-net.com(6693)

Question 134588: Dear Tutor
Could you please help me with this investigation question from an old Maths Textbook?
Please solve this inequation:

The book only gives the answer: . I tried to use "log" or "cube roots" to find out x but it seemed neither of them helped. Therefore, could you please show me how do you get ? Thank you in advance. :-)
Click here to see answer by stanbon(26297)

Question 134917This question is from textbook
: How are power of a quotient perform with no base number?This question is from textbook

Click here to see answer by solver91311(5072)

Question 135122: 5^-2=
a) 1/25
b)-1/25
c)1/10
d)-10
Click here to see answer by stanbon(26297)

Question 135337: Can someone point me to the right direction with this problem?
Use a combination of rules and exponents to simplify each expression.
y to the negative 8 power times y to the 5 power times y to the negative 2 power.
So far I come up with y to the neg. 8 power over 1 = 1 over y to the 8 power. Does it just become positive y to the 8 so you can begin to times it by the y to the 5 power and so forth? I would like to know if I am doing the problem right.
Anyones response greatly appreciated.
Click here to see answer by Earlsdon(4900)

Question 135641: 6x+2x=7x+1
Click here to see answer by baholik06(4)

Question 135806: Can you please help me solve this formula:
I know that there are three answeres I just don't know how to start it.
Thank You
Click here to see answer by checkley77(7072)

Question 135806: Can you please help me solve this formula:
I know that there are three answeres I just don't know how to start it.
Thank You
Click here to see answer by ptaylor(1578)

Question 135883: please help me solve these problems, Thank You!:
(2a^2n^5)(-3an^2)=
(3qn^2)^3=
(y^7/6)^2=
Click here to see answer by checkley77(7072)

Question 136061: My question is regarding Sessa's reward. What is the equation to determine the total number of grains of rice after 64 days?
Click here to see answer by stanbon(26297)

Question 136266: Solve the following equations for the unknown.

1)6.2(x - 15.1) = 9.3(-x - 3.2)

2)x/3 - 7/8 = 2/5(x + 15/4)

Click here to see answer by checkley77(7072)

Question 136304This question is from textbook
: how do I simplify ?This question is from textbook

Click here to see answer by checkley77(7072)

Question 136262: Solve the following equation for the unknown:
1) 6.2(x - 15.1) = 9.3(-x - 3.2)
Click here to see answer by checkley77(7072)

Question 136440: if P+ 7y+2xy-6x and Q=5-7y find the value of 3p-4q
Click here to see answer by algebrapro18(206)

Question 136506: How to i solve this equation x^3-20=44
Click here to see answer by stanbon(26297)

Question 136506: How to i solve this equation x^3-20=44
Click here to see answer by scott8148(3385)

Question 136820: how do you solve problems like 11 (-7) divided by 11 (5)
Click here to see answer by checkley77(7072)

Question 138189: Please help me solve this equation. I don't know what to do.
(-1/2)(-2/3)
Thank you,
Cindy
Click here to see answer by stanbon(26297)

Question 139238: Please help me solve this question, long time i don't divide polinomians, i will appreciate it. thank you.
20a^2+7ab-3b^2/4a-b
Click here to see answer by checkley77(7072)

Question 139526: x^3(2x^-2+4x)
what is the method of answering the question above?
Click here to see answer by stanbon(26297)

Question 140613: Is it possible to have squares of any integer to be a negative one?
Say x^2= -1 or -4?
Click here to see answer by scott8148(3385)

Question 140848: Dear tutors,
Simplify y^3*y^2*y^4
Does it equal
A.)y^9
B.)y^24
C.)24y^4
D.)2y^7 Thanks so much!
Click here to see answer by rapaljer(3625)

Question 140881This question is from textbook ogt in math
: how do you do the problem between what 2 integers does 4.23*10-5This question is from textbook ogt in math

Click here to see answer by stanbon(26297)

Question 140877: how do you do problem number 6
Click here to see answer by rapaljer(3625)

Question 140820: In the expression 5 to the 2nd power, the 5 is called the ___________________. and the 2 is called the _______________________.
Click here to see answer by rapaljer(3625)

Question 140809: Calculate
(6x10^5)^2

Click here to see answer by checkley77(7072)

Question 140808: Simplify
(w^7)^-4

Click here to see answer by rapaljer(3625)

Question 140808: Simplify
(w^7)^-4

Click here to see answer by checkley77(7072)

Question 140926: In 2004 the population of the US was 294.4 million. if the population continues to grow at an annual rate of 1.05% then the population in the year 2015 will be 294.4(1.0105)to the 11th power million. Evaluate the expression to find the predicted population in 2015 to the nearest tenth of a million people. Estimate what year the population will reach 350 million people.
Click here to see answer by stanbon(26297)

Question 141084: Simply the expression
3x(x^5)^2
--------------
6x^3(x^2)^4
Click here to see answer by rapaljer(3625)

Question 141094: Simplify
(-6x^2y^4z^9)^2
(------------)
( 3x^6y^4z^3)
Click here to see answer by rapaljer(3625)

Question 141178: please help. simplify 6/5w / 2/5w thanks
Click here to see answer by stanbon(26297)

Question 141217This question is from textbook Introductory Algebra
: My problem, I don't know how to set them correctly (or effectively) to where they make sense to me. I am a senior citizen who has gone back to school.This question is from textbook Introductory Algebra

Click here to see answer by solver91311(5072)

Question 141431: How do you solve this rational expression?
(5X^3)(16X^2)/80X^3.
I have tried doing it on my own, but my teacher did not explain how to do it...
Click here to see answer by rapaljer(3625)

Question 141444: (-12)then exponent -2, then what is the differnce between that and -12 and exponent -2?
Click here to see answer by solver91311(5072)

Question 141635: Please, I need your help.
Find the accumulated value of an investment of $8000 at 8% compounded semiannually for 6 years. Round your answer to the nearest cent.
Click here to see answer by checkley77(7072)

Question 141639: Thanks for the previous question answered. Pls, help me in this one also
Cindy will require $12,000 in 5 years to return to college to get her degree. How much money should she ask her parents for now so that, if she invests it at 12% compounded continuously, she will have enough for school? (Round your answer to the nearest dollar.)
Click here to see answer by stanbon(26297)

Question 142397: fractional exponents inq: solve for x. this question is not from the book. its from a worksheet my teacher created.
Click here to see answer by stanbon(26297)

Question 142420: fractional exponents: this is not from a book its from a work shett my teacher made.
Click here to see answer by checkley77(7072)

Question 142419: fractional exponents: this is not from a book its from a work shett my teacher made.
Click here to see answer by checkley77(7072)

Question 142429: fractional exponents: this is not from a book its from a work sheet my teacher. solve for x pls dont stop at factoring it out.
Click here to see answer by checkley77(7072)

Question 138494: what is the answer for 6 to the 3rd power
Click here to see answer by checkley77(7072)

Question 142396: (4x^2y^3z)x^2
-------------
yz
Click here to see answer by checkley77(7072)

Question 142459This question is from textbook

: what is the answer to (3a^3b^2)^3= (3a^3b^2)^2 (____________ )This question is from textbook

Click here to see answer by ilana(236)

Question 142563This question is from textbook a survey of mathematics with applications
: Dorian and Dingo have a petting zoo with 12 animals, and all of them are either sheep or goats. They have twice as many sheep as goats. How many goats do they have?
This question is from textbook a survey of mathematics with applications

Click here to see answer by stanbon(26297)

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