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

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Question 205000: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help.
1. Simplify: 4[a � b(2 + 3a)] � 3a[2+b(4 � a)]
2. Simplify: (7x2 � 2y + z) + (3y � z) + (4x2 � 6y)

Click here to see answer by MathTherapy(10549)

Question 205004: I need help with this word problem. Can anyone help me? I do appreciate whatever you can do.
9. Sandy has $3.25 in change. She has five more dimes than quarters but twice as many nickels as dimes. Express the given information as an algebraic equation and simplify. [You are not required to solve the problem.
Click here to see answer by scott8148(6628)

Question 205309: m^-3(m^3)^-3 /m^-4m^7
Click here to see answer by stanbon(75887)

Question 205545: Evaluate each expression if g=3,h=-1and m=9 g2-m+
Click here to see answer by Alan3354(69443)

Question 205793: 10(-5) +1(-5)
Click here to see answer by checkley77(12844)

Question 206181: (x4)-3 - 2x4
Click here to see answer by RAY100(1637)

Question 206284: i need help with the problem
-p/16 + 5 = 9
Click here to see answer by mickclns(59)

Question 206630: A.
B.
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Question 206745: If 2^5 = 32, then 2^100 is closest to
(A) 1010 (B) 1015 (C) 1020 (D) 1025 (E) 1030
Click here to see answer by jpass(2)

Question 206910: Simplify, assuming that variable exponents denote positive integers.
A.(3cd^2)^2(-2c^3d)^3
B. h^m-n(h^m+n+h^m)
Click here to see answer by dlam5(15)

Question 206962: convert the following measurement to scientific notation: 15,400 mm 3 (to the 3rd power)
Click here to see answer by rfer(16322)

Question 207081: I don't know if this is the right section because I don't know the name of what I am trying to do!! We have to use the numbers 1, 9, 5 and 6 in basic equations and come up with answers from 0-30. For example, (9+1) divided by 5 x 6 = 12. I was wondering if there was an actual formula that I am supposed to be using? Also, can't use decimals, only whole numbers. HELP!!!
Click here to see answer by solver91311(24713)

Question 207255: I am not sure how to begin to do this one. I need help with this one as well. This one seems complicated.
(0.5x^4 - 0.6x^2 + 0.7) - (2.3x^4 + 1.8x - 3.9) =
Whatever you can do will be appreciated.
Click here to see answer by RAY100(1637)

Question 207629: Find the slope and the y-intercept for the following equation of a line:
Slope = y-intercept =

Click here to see answer by jim_thompson5910(35256)

Question 207830: In algebra, if I have $2,938.70, how long will it take to double my money at 8% interest rate and contiunuous compounding?
Click here to see answer by Theo(13342)

Question 205154: for the exponential function e^x and logarithmic function log x. what happens if the x is halved show graphically
Click here to see answer by solver91311(24713)

Question 208631: 16 = -4b
Click here to see answer by user_dude2008(1862)

Question 208690: If x^64 = 64 then x^32=
(A)8 or -8
(B)12 or -12
(C)16
(D)32 or -32
(E)48
Click here to see answer by stanbon(75887)

Question 208788: i cant solve 2 squared times3 times 59 in exponential form
Click here to see answer by DRichardson(63)

Question 208796: 6+(-12)+5
Click here to see answer by RAY100(1637)

Question 209069: simplify:
(-5xy^6)^3
Click here to see answer by RAY100(1637)

Question 209143: how would i rewrite the following into ax^n?
(-5x^3) X (-2x^4) and
72x^7/6x^2
Click here to see answer by Alan3354(69443)

Question 209259: Make x the subject of this formula:
a = b^x
Click here to see answer by Theo(13342)

Question 209259: Make x the subject of this formula:
a = b^x
Click here to see answer by RAY100(1637)

Question 209233: if 3^a-b = 1/9 and 3^a+b = 9 then a =
A) -2 b) 0 c) 1 d) 2 e) 3
Click here to see answer by stanbon(75887)

Question 209452: Rewrite -2 - 2 (-1) to the third power a+b so that it involves only addition.
Click here to see answer by rfer(16322)

Question 209669: simplify each exponential expression (2x^3)^-4
Click here to see answer by Earlsdon(6294)

Question 209821: (2a)1/2
Click here to see answer by RAY100(1637)

Question 210188: (x^5y^3)3(xy^5)^2
Click here to see answer by Earlsdon(6294)

Question 210343: 2/3 of a nunber decreased by 7=27.what is the number
Click here to see answer by vleith(2983)

Question 210544: How you write 10,000 using exponents?
Click here to see answer by ichudov(507)

Question 210686: how would i factor this equation: 2a^2+7a^1-4
Click here to see answer by stanbon(75887)

Question 210763: 1=.5^n
Click here to see answer by stanbon(75887)

Question 210823: What is 9 to the power of 15?
Click here to see answer by checkley77(12844)

Question 210955: I need help with these two problems.
1. 7x^3-14x^2+21x over 7x (meaning its a line under the first half of the problem and the 7x is under that)
2. 4x^3-15x^2-190x+9 over x-9 ( same thing here the problem is underline and the x-9 is under that)

Click here to see answer by stanbon(75887)

Question 210957: I have two problems I need help with.
1. (7x-4)+(5x-7)= 7x-4+5x-7 =
2. (2x+5.1)-(x+7.6)= 2x+5.1+(-x)+(-7.6)=
Click here to see answer by jim_thompson5910(35256)

Question 210957: I have two problems I need help with.
1. (7x-4)+(5x-7)= 7x-4+5x-7 =
2. (2x+5.1)-(x+7.6)= 2x+5.1+(-x)+(-7.6)=
Click here to see answer by checkley77(12844)

Question 210956: Find the polynomial for the shaded area in the figure given below:
The shape is a square with a circle in it. The square is shaded except for the circle that's inside the square which is 2x. Outside the square on the right side shows 6x and the bottom shows 9x+2. Can you help me solve this?

Click here to see answer by jim_thompson5910(35256)

Question 212182: How do I break down this problem?
(-1/2x^2y^3)^2(-2xy)^3
Click here to see answer by Alan3354(69443)

Question 212872:
Click here to see answer by rapaljer(4671)

Question 214222: How would I write 95.214 in exponential notation?

Click here to see answer by drj(1380)

Question 214313: 8x cubed minus 125y cubed
Click here to see answer by Earlsdon(6294)

Question 214312: x to the fourth power plus 3x squared minus 10
Click here to see answer by Earlsdon(6294)

Question 214368: (x+y)* (x+y)*(x+y)= (x+y)^3 laws of exponents
when I use the distributive law...I get x^3 + 3*x^2*y + 3*x*y^2 + y^3 why can't I prove out (x+y)^3? I am missing something
Click here to see answer by stanbon(75887)

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