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 127961: Add And Subtract Terms:
6.3X + 1.2Y- 3.2X+5.4 + 4.3Y
Click here to see answer by crzyy321(5)

Question 128123: ab^-8
______
c^5
Click here to see answer by edjones(3298)

Question 127966: Evaluate 6-(2+3) + (4-2)
Click here to see answer by idkweirdo(16)

Question 128106: Add And Subtract Terms
3/4A + 2/3B - 1/2B + 1/2A
Click here to see answer by apachemexican1(56)

Question 119831: A car uses 10 gallons of gasoline on a trip of 370 miles. At that rate, how much gasoline will a trip of 518 miles require?
Click here to see answer by apachemexican1(56)

Question 112853: Multiply.
(2r-3s)(4r squared +6rs + 9s squared)
Please help!
Click here to see answer by apachemexican1(56)

Question 128879: x2 ((squared)) + 7x+10 = 0
Click here to see answer by solver91311(5072)

Question 128808: Simplify: -3x^0 + (1/2)^-2 - (-2)^3
Click here to see answer by crzyy321(5)

Question 128950:

16mn^-5 9^4*9^6
Ialways get mixed up on these!
Click here to see answer by checkley71(8405)

Question 129007: Tom’s uncle owns a triangular piece of land. The perimeter fence that surrounds the land measures 378 yards. The shortest side is 30 yards longer than one-half of the longest side. The second longest side is 2 yards shorter than the longest side. What is the length of each side?
What does this problem mean? I tried and I don't understand it. Please help me
Click here to see answer by checkley71(8405)

Question 129162:
If P = 7y + 2xy - 6x and Q = 5 - 7y, find the value of 3P - 4Q. Please help I am very confused on this one. Please Help Me
Click here to see answer by checkley71(8405)

Question 129166:

Divide 3x2y + 6xy2 by xy.

Click here to see answer by checkley71(8405)

Question 129161: In an auditorium there are 4a rows, and each row can accommodate 5yz benches. If x students can be accommodated in each bench, then how many students can sit in the auditorium?
Please help me with this problem I have tried and don't understand it. Please Help Me
Click here to see answer by edjones(3298)

Question 129334: Find the exact value of (111, 111, 111)^2
Click here to see answer by checkley71(8405)

Question 129621: Factor: (4w^2-u^2)
Click here to see answer by Earlsdon(4900)

Question 129696This question is from textbook
: please help me solve this equation:(6x^2/24x^4)^2This question is from textbook

Click here to see answer by checkley71(8405)

Question 130034This question is from textbook Algebra 2 and Trigonometry
: (-27)^n = 9
I am having a hard time understanding how to solve problems like this that have a negative interger and an exponent. I am also having problems with exponents that are fractions. The section in my book is called Rational Exponents.
Any help would be greatly appriciated. This question is from textbook Algebra 2 and Trigonometry

Click here to see answer by Earlsdon(4900)

Question 130541: (3x+2)exponent4

Click here to see answer by checkley71(8405)

Question 130502: (-y^-4)^2 / 6(y^-5)^-1
simplify expression with positive exponents only
Click here to see answer by cngriffith(27)

Question 130614: Im really confused could someone please help?
Solve by factoring:
7a2+9a+2=0
Click here to see answer by jim_thompson5910(13794)

Question 130657: ok this is grade 10s math pure exponents how do u solve this problem?
(M to the power of 5)*(M to the power of 4)3
Click here to see answer by Earlsdon(4900)

Question 130793: does anybody know what a "multiplicative inverse" is????
PLZZZZZZZZZZZZZZ help i've looked everywhere!!!!
Click here to see answer by cngriffith(27)

Question 130939: (5x + 2x - 7x – 3) – (6x + 3x – 11)
125x + 4x – 7x – 3 – 36x + 3x – 11
(125x + 4x – 7x – 36x + 3x) – 3 - -11
(125x + 4x + 3x – 43x) – 3 + 11
89x + 8
Do I have the right answer?
Click here to see answer by cngriffith(27)

Question 130940: (5x + 2x - 7x – 3) – (6x + 3x – 11)
125x + 4x – 7x – 3 – 36x + 3x – 11
(125x + 4x – 7x – 36x + 3x) – 3 - -11
(125x + 4x + 3x – 43x) – 3 + 11
89x + 8
NOTE: ORIGINAL EQUATION HAD EXPONENTS IN IT:
(5x^3 + 2x^2 - 7x - 3) - (6x^2 + 3x - 11)
Click here to see answer by checkley71(8405)

Question 130572: -7 squared = 294 or -294
Click here to see answer by cngriffith(27)

Question 131150: Can you please tell me if this is figured right?
Simplify: ( x/x^2 – 9 ) – ( x/x^2 + 2x – 15 )
(1 - 9) - (3x - 15)
-8 - - 12
-8 + 12
= 4
Click here to see answer by edjones(3298)

Question 131426: I don't understand this! Help!!
(-9x^3)^2(-1/9x^6)
the slash meaning a fraction
thanks!
Click here to see answer by josmiceli(3012)

Question 131426: I don't understand this! Help!!
(-9x^3)^2(-1/9x^6)
the slash meaning a fraction
thanks!
Click here to see answer by 067isa(13)

Question 131542: express using a positive exponent 1/h^-6
Click here to see answer by checkley71(8405)

Question 132129: -a-n an-1 a1(-a)-n
____________ Simplify. N is an even number
a-n
I couldnt do exponents in this format so the problem reads negative a to the negative n, times a to the n minus 1, times a to the 1, times negative a to the negative n, over a to the negative n.
Click here to see answer by rapaljer(3622)

Question 131928:
(7x^2-x-4)-(9x^2-10x+8)+(12x^2+4x-6)
Click here to see answer by checkley71(8405)

Question 132569: solve
3x to the 2nd power + 17 = 33 + 7x 2nd power
Click here to see answer by stanbon(26296)

Question 132706: 1. solution of x2y5y-2x-2
2. solution of p0x-1(x-2x0)
3. solution of m5b2mb-2
4. solution of 4x2p0(3xp5-2x-2)
and how you arrive at the solutions thank you
Click here to see answer by stanbon(26296)

Question 132955: 27^3x=9^4x-2
Click here to see answer by Nate(3495)

Question 132832:

What is the simplified form of:(3x^3y^2)^4(2y)^-3
Answer choices:
A) 3/2x^12y^5
B) 3/2x^7y^3
C) 81/8x^12y^5
D) 81/8x^7y^3

Click here to see answer by checkley71(8405)

Question 133179: I am stuck on a problem, would you please be able to assist me. Thank you.
I am asked to simplify the following, expressing your answer with positive indices.
The problem is as follows:
(2x^3y^-2/-3x^5y^-4)^2.
This would really be appreciated. Thank you so very much.
Cheers D
Click here to see answer by vleith(1977)

Question 133297: Hi all
I have a couple of easy ones for you, but I need to know if I have got them correct for my methodology. Would you please be so kind and have a look at these for me. Thank you.
I am asked to simplify the following:
Q1/ x-x^-1 and also Q2/ (x+x^-1)^-1
I have
Q1/ x-1/x and also Q2/ 1/(x+1/x)
Am I on the right track?
Thank you so very much.
Cheers D
Click here to see answer by vleith(1977)

Question 133229: 204800=50*2^3/D
Note that 3/D is the exponent
Click here to see answer by scott8148(3385)

Question 133616: (h-2)exponent2+(h+1)exponent2=9
Click here to see answer by vleith(1977)

Question 133631: Hello, I appreciate everyone help these last couple days as I get ready to take a math assessment. I haven't done this stuff in years! I just discovered this site :) wish I had known about it a long time ago lol. Okay here is probably my last question till I get assessed...can someone please explain how to solve this and the rules behind this radical expression. Given: x and y are greater than zero. Here it is the square root of x divided by 3 times the square root of x minus the square root of y. Does that make sense?
Click here to see answer by jim_thompson5910(13794)

Question 133822This question is from textbook

: Simplifying Expressions:
Simplify, if possible. Write your answers as a power or as a product of powers.

5^3 x (5a^4)^2

The answer I got was 5^5a^8
I don't think that I'm doing it right though.
Could you please explain the steps I should be taking?This question is from textbook

Click here to see answer by Earlsdon(4900)

Question 133805This question is from textbook

: Simplifying Expressions:
Simplify, if possible. Write your answer as a power or as a product of powers.

(-2xy)^3 (-x^2)

I'm getting confused on how far to go, and do you combine both of the problems in the quotations?
Or Is the 2x^3y^3-x^2 that I got as an anwer correct, or even close to the right direction?This question is from textbook

Click here to see answer by checkley71(8405)

Question 134371: Question: 0.6=0.88^x
How do I find x and can it be done on a calculator?
I found the answer by 0.6 divided by 0.88 and counted the number of reps till I got the answer 1 (or close to), but there must be a better way.
Click here to see answer by stanbon(26296)

Question 134381: Find the smallest whole number that when divided by 5,7,9, and 11, respectively, gives remainders of 1,2,3, and 4.
Click here to see answer by vleith(1977)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845