Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Algebra: Evaluation of expressions, parentheses

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Question 128784: I need help understanding how to simplify expressions using fractions. I am not understanding the first step I need to do. Here is an example problem:
1/2(3a-8)+1/3(2a-9)

Click here to see answer by edjones(3299)

Question 128838:
Simplify the exponential expression.
(.25xy)(-20x^-1y^-5)
Click here to see answer by checkley71(8405)

Question 116526: 10.3x -8 + 16.5 + 6.8x
Click here to see answer by apachemexican1(56)

Question 129486: I really just need to be refreshed on solving more difficult equations for what would be a good place for me to start brushing up.
Click here to see answer by idkweirdo(16)

Question 129689This question is from textbook Algebraic concepts
: 3x(x+1)This question is from textbook Algebraic concepts

Click here to see answer by checkley71(8405)

Question 130515: in the fraction 3/*, * may not be substituted by which of the following sets?
a) {1,2,4} b) {-2, -3, -4} c) {1,3,7} d) { 0, 10, 20 } e) { 1.8, 4.3}
help me.......thanks in advance
Click here to see answer by scott8148(3385)

Question 131024: solve for x
4(x+4)=6(y-2)
Click here to see answer by jim_thompson5910(13794)

Question 131023:
solve for x
4(x+4)=6(y-2)
Click here to see answer by checkley71(8405)

Question 131022: solve for x
4(x+4)=6(y-2)
Click here to see answer by checkley71(8405)

Question 131310: If y=3 then y3(y3-y)y=? A.999 B.459 C.1099 D.648
Click here to see answer by solver91311(5072)

Question 131305: If y(x-1)=z then x= a.y(z-1) b.z/y+1 c.y-z d.1-zy
Click here to see answer by solver91311(5072)

Question 131309:
Which of the following values is not equal to 34(58+9)? A.1,972+306 B.58(34+9)C.34x58+34x9 D.34x67
Click here to see answer by checkley71(8405)

Question 131368: question: 65+n=85-16+3n

Process so far:65+n=69+3n
65+n-n=69+3n-n
65=69-2n
65-2n=69+2n-2n
Click here to see answer by checkley71(8405)

Question 131372: 13a-15b-a+2b can u solve this please going back to school in fall to study forensic science need to get through this placement test
Click here to see answer by jim_thompson5910(13794)

Question 131544: When the sun starts to cross the horizon, the surface temperature was 7 degrees at 6 am. As the day wore on, the temperature went up by 2.5 degrees per hour. By sundown, at 7 pm, what was the final daytime temperature?

Click here to see answer by stanbon(26297)

Question 131850: 5x-(4x-1)=2
Click here to see answer by priya_2685(3)

Question 131885:

4x - 5y + x – [6x - 3x – (y - x)] I can't remember do I do what's in the parenthesis first, then do the operation within the brackets or do the parenthesis first and then group all like terms.
Please help
Click here to see answer by checkley71(8405)

Question 132233: I have a few problems I need help with. Can you help me?All of these are multication and divison
(3x+4)(x^2-5+1)
(1/2x + 1/3)(1/2x-1/4)
(12y^3+18y^2+24y)/(6y)
(2x^3-9x^2+11x-3)/(2x-3)
Click here to see answer by stanbon(26297)

Question 132669:

If y(x-1)=z then x=
I REALLY NEED SOME HELP WITH THIS ONE, PLEASE THANKS.
Click here to see answer by checkley71(8405)

Question 132720: x2-4(x-y) given x=8 y=3 A)60 B)44 C)84 D)46
so 63-4(8-3) didn't match any of these answers. Did I do this correctly? Thank you so much.
Click here to see answer by elima(1433)

Question 129443: a=9 b=13 what does 4ab mean?
Click here to see answer by brikay0299(3)

Question 129215: "Subtract 3 from 15. Divide this difference by 2. Multiply this quotient by 4." using brackets and parenthesis
Click here to see answer by brikay0299(3)

Question 133140: need help writing algebriac expression for these problems "the product of 8 and a number is 88," "the sum of three and twice a number is 55", three times the sum of three and a number is 57" and "eight more than five times a number is that number increased by 28".
Click here to see answer by oscargut(682)

Question 133484: 1345+x=3432-x
Click here to see answer by oscargut(682)

Question 133665: 2x3+2x2-4x
-----------
x3+2x2-3x
Click here to see answer by jim_thompson5910(13794)

Question 135131: An insurance salesperson earns a salary of $1,200 per month plus a commission of 3% of sales. How much must the saleperson sell to have a monthly income of a least $1,500.

PLease Help Thanks
Click here to see answer by vleith(1977)

Question 135132: Solve for the variable indicated in RED. IN THIS CASE THE VARIABLE IS THE LETTER X.
y=x/5-4 HELP PLEASE
Click here to see answer by vleith(1977)

Question 135133: Find the simple interest.
$1,050 deposited at an interest rate of 2% for 9 months. HELP ME THANK YOU
Click here to see answer by stanbon(26297)

Question 135134: Find the balance.
$18,500 at the 9% compounded semiannually for 5 years. HELP!
Click here to see answer by stanbon(26297)

Question 135172This question is from textbook
: Translate each verbal expression into and algebraic expression.
#72
One half of a numberThis question is from textbook

Click here to see answer by Earlsdon(4900)

Question 135200: Useing the PEMEDS expesssion, (Please, excuse, my dear, aunt sally)
Simplify
1. 2+3*5^2-7
2. 6+3[(12/4)+5]
3. (4/2)+4(5-2)^2
4. -8-81/9*2^2+7

Click here to see answer by stanbon(26297)

Question 135666: Simplify the expression. Write your answer using positive exponents.
(5^-2)^-3
Any straightfoward correct help would be much obliged :) Thanks
Click here to see answer by stanbon(26297)

Question 135993: i'm not quite sure if this is evaluation of expressions, parentheses, i'm just confused! i'm in 7th grade pre algebra and i was wondering if you could help me. the homework i'm having troubele with is this for exameble...
3(3-y)+1=31 and 8x-11(x-2)=-1 theres alot more but those are just two on that page. also if you could walk me through the problem in a really simple way that would be awsome! i cant figure any of it out. i went to another homework helper and it was too complecated. haha. so if you could pleas please please help me soon that would be amazing
-confused
Click here to see answer by Fombitz(2113)

Question 135992: Solve the equation
6(5g+2)= 30g
Any straightfoward and correct help would be much obliged:)~:)
Click here to see answer by nycsharkman(136)

Question 135992: Solve the equation
6(5g+2)= 30g
Any straightfoward and correct help would be much obliged:)~:)
Click here to see answer by solver91311(5072)

Question 135950: Hi could you help me with this question on rational expressions?
Simplify each rational expression. State any restrictions on the variable.
3x^2-12/x^2-x-6
Thanks for the help!
Click here to see answer by ptaylor(1578)

Question 136480This question is from textbook

: evaluate xy if x = 2/3 and y = 3/4. I did not type the correct ISBN because this is a worksheet.This question is from textbook

Click here to see answer by checkley77(7072)

Question 136876: write this phrase as an expression Eleven less than three times a number
Click here to see answer by stanbon(26297)

Question 137881: Which equation is equivalent to
4(2-5x)=6-3(1-3x)
Click here to see answer by stanbon(26297)

Question 138151This question is from textbook introductory algebra
: simplifing expression & combining like terms
7y+8yThis question is from textbook introductory algebra

Click here to see answer by solver91311(5072)

Question 138160: simplify and combine terms
-12p+3p
Click here to see answer by checkley77(7072)

Question 138132: Please evaluate the expression: [4-(-2)^3]/(-3-1) where ^ means to the power of.
Thanxs very much.
Click here to see answer by checkley77(7072)

Question 138442: what does this formula mean
total price ($)= 3.50+1.50x# of miles
Click here to see answer by solver91311(5072)

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