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 139066: Assuming that both numbers are in base 3, find the product of 21 x 21.
Click here to see answer by stanbon(26291)

Question 139152: Solve 5x + 9 - (2x-3)=2x-7
Click here to see answer by checkley77(7072)

Question 139429: -3(4x-2)-2(5x-4)
Click here to see answer by checkley77(7072)

Question 139593This question is from textbook
: Factor each expression.
5x2+16x+3This question is from textbook

Click here to see answer by jim_thompson5910(13794)

Question 139937: k/3-1/3k-1/k
Click here to see answer by edjones(3298)

Question 140173: the formula for converting degrees fahrenheit(f) to degrees (c) is
c=5/9(f-32)Find c when f=68
Click here to see answer by oscargut(682)

Question 140190: What does evaluate C(4,6)mean? I can't show the work because I don't know what to do?
Click here to see answer by scott8148(3382)

Question 140373: evaluate x=-3 and y=-4 2xsquare - ysquare + 2xy
Click here to see answer by checkley77(7072)

Question 140850: Express 7.02 * 10^-5 in standard notation. 10^-5 = ten to the power of negative five.
Thanks
Click here to see answer by rapaljer(3622)

Question 140849: Simplify (x^5)^2
A.) x^10
B.) x^7
C.) 2x^5
D.) x^25
Thanks whoever helps me!by the way (this means ^ power of)

Click here to see answer by rapaljer(3622)

Question 140849: Simplify (x^5)^2
A.) x^10
B.) x^7
C.) 2x^5
D.) x^25
Thanks whoever helps me!by the way (this means ^ power of)

Click here to see answer by jim_thompson5910(13794)

Question 140975: I need help to solve this complex rational expression
4+2/X
_________
X/4+1/8
Click here to see answer by stanbon(26291)

Question 141264: a recipe calls for 3/4 of a pound of sausage. How much sausage should be used if only 1/3 of the recipe is being made. Write the answer in simplest form.
Click here to see answer by checkley77(7072)

Question 141439: (3x-2y)^2=
a. 9x^2-4y^2
b. 9X^2+4y^2
c. 9x^2+4y^2-6xy
d. 9x^2+4y^2-12xy
Click here to see answer by checkley77(7072)

Question 141671This question is from textbook problem solving strategies
: Betty,Cathy,Isabel,Lani,Alma,Ursula ran an 800-meter race.Alma beat Isabel by 7 meters.Ursula beat betty by 12 meters.Alma finishedw 5 meters ahead of Lani but 3 meters behind Ursula.Cathy finished halfway between the first and last girls.In what order did the girls finish?What were the distances between each girl?This question is from textbook problem solving strategies

Click here to see answer by ankor@dixie-net.com(6693)

Question 141823: 1.) A company sells 375 scissors fo $562.50. Expenses total
$395.75. How much profit is made from each pair of scissos?

Thanks fo the help!!!
Click here to see answer by ankor@dixie-net.com(6693)

Question 141866: Can you please help me figure this problem out. I tried and I just can't get it. 57% of what number is 23? How do I come up with the answer. PLEASE HELP ME
Click here to see answer by stanbon(26291)

Question 142231: I'm trying to help my grandson with his math. Can you solve this for me? I think I may be able to help if I get the answer to one.
-G+13+9(G+5)=
Click here to see answer by scott8148(3382)

Question 143249: 6 1/2a for a=14
I have no clue how to do this problem.I am helping my son with his homework.We are doing evaluate the expressions.
Click here to see answer by checkley77(7072)

Question 143720: Someone, PLEASE HELP, this is a problem i have never seen before. i would appeciate any help just to get started.
Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12
Click here to see answer by Edwin McCravy(2922)

Question 143719: if someone could help me with this one also. i hope that i can enter this on the screen correctly. i'm supposed to simplify this expression. Thank you in advance.
(6a^2/7b^3)^-2
Click here to see answer by rapaljer(3622)

Question 143718: if someone could help me with this one also. i hope that i can enter this on the screen correctly. i'm supposed to simplify this expression. Thank you in advance.
(6a^2/7b^3)^-2
Click here to see answer by rapaljer(3622)

Question 143850: Factor to make 2 binomials
2x^2 + 5xy - 2y^2
Click here to see answer by jim_thompson5910(13794)

Question 143891: Please help me someone!! How would i simplify this expression?
(8x^3/27y^6)^1/3
Click here to see answer by vleith(1977)

Question 143891: Please help me someone!! How would i simplify this expression?
(8x^3/27y^6)^1/3
Click here to see answer by stanbon(26291)

Question 144134: 7x-28/4=21
Click here to see answer by checkley77(7072)

Question 144168: Please someone help. There is simply no way to multiply this. i came up with, 27xy + 64yx +9y. What am i doing wrong?
(3x + 3y)2(2x + 3y)
Click here to see answer by Alan3354(6092)

Question 144167: How do you divide this. Someone Help. THANK YOU.
(2x3 - x2 + 3x -1) ÷ (x + 2)

Click here to see answer by stanbon(26291)

Question 144239: 1/12u - 1/36 + 1/2u = 1/2 + u
I have the answer but can't figure out how they got it.. I just need someone to show me how they got the answer of (-19/15)
Click here to see answer by jim_thompson5910(13794)

Question 144238: Solve:
1) 12b - 8 _< 13b + 9
I have tried this about 4 times and can not figure it out
2) -2x - 10 < -4

Click here to see answer by Earlsdon(4900)

Question 144291: solving equations containing parenthesis:

1. solve -[6x-(4x+8)]=9+(6x+3)
2. solve 4(x-2)+2(x+3)=6
Click here to see answer by checkley77(7072)

Question 144443: if x=-1 and y=2 what is the value of the expression 2x-3xy?
Click here to see answer by Alan3354(6092)

Question 144446: what is the equation of the line that contains the points with (-3,7)and(5,-1)?
Click here to see answer by Alan3354(6092)

Question 144492: i know (-6i) (-6i) is -36 but i don't know why. i can't seem to find out what i means.. negateve times negative , i thought was positive
Click here to see answer by jim_thompson5910(13794)

Question 144706This question is from textbook introductory algerba
: hello can u help me slove this problem iam ostThis question is from textbook introductory algerba

Click here to see answer by solver91311(5072)

Question 145074: -6(x+1)+4=16
Click here to see answer by nabla(412)

Question 145073: How do I simplify and write answer using positive exponents
(-x^8)^2y^4x^3x^0

Click here to see answer by Jerseegrl(2)

Question 145193: sHOW THAT (x-3)is a factor of x^3-5x^2-18x+72
Click here to see answer by vleith(1977)

Question 145199: [3(-4)+6].(-3)Please break it down step by step in order of operations thanks
Click here to see answer by vleith(1977)

Question 145198: [3(-4)+6].(-3)Please break it down step by step in order of operations thanks
Click here to see answer by checkley77(7072)

Question 145314: one number is four times another number.the larger number is also 87 more than the smaller number.what are the numbers?
Click here to see answer by Alan3354(6092)

Question 145320: A clown weighs 60 lbs more than a trapeze artist. The trapeze artist weighs two thirds as much as the clown. How much does each weigh?
Click here to see answer by Alan3354(6092)

Question 145324: Western State College is 18 years older than Southern State. Western is also 2 1/2 times as old as Southern State. How old is eac?
Click here to see answer by ankor@dixie-net.com(6693)

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