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 8257: write an expression for the value of a 3-digit whose hundreds, ten, and units digits are x,y,and z
Click here to see answer by Earlsdon(4900)

Question 8445: I need help please: Thanks.
Click here to see answer by bonster(299)

Question 8445: I need help please: Thanks.
Click here to see answer by drglass(89)

Question 8444: I think there's factoring in this one: . Help please?
Click here to see answer by bonster(299)

Question 8438: is the equation I am having trouble with. Could you help? Thank you very much.
Click here to see answer by bonster(299)

Question 8442: This is a quadratic equation: . Help please? I got it wrong.
Click here to see answer by drglass(89)

Question 8436: I need some help with this problem: .Thanks.
Click here to see answer by drglass(89)

Question 8436: I need some help with this problem: .Thanks.
Click here to see answer by khwang(438)

Question 8434: Ok, some of these types of problems, for example , I understand, but in , I don't get it. I know you're supposed to factor out the GCF, but I'm lost. Help would be very appreciated.
Click here to see answer by drglass(89)

Question 8433: I am having a bit of trouble with factoring by grouping. The problem is: Thanks for the help ahead of time!
Click here to see answer by drglass(89)

Question 8432: I am having some trouble with factoring by grouping. .Help please? Thank you.
Click here to see answer by drglass(89)

Question 8430: I am having trouble with factoring by grouping.This is the problem: . Could you please help me out? Thanks.
Click here to see answer by drglass(89)

Question 8427: The problem on my homework says: Find all factors of .
Help please? Thanks.
Click here to see answer by drglass(89)

Question 8455: Please help me to factorize the following:
(x+5)^2 - 4(x+5)
Click here to see answer by drglass(89)

Question 8455: Please help me to factorize the following:
(x+5)^2 - 4(x+5)
Click here to see answer by Earlsdon(4900)

Question 8439: A bit of help, please? It's . Thank you!
Click here to see answer by Earlsdon(4900)

Question 8439: A bit of help, please? It's . Thank you!
Click here to see answer by khwang(438)

Question 8426: I am having difficulty factoring trinomials, could you please help me with this problem?

Thanks ahead of time.
Click here to see answer by Earlsdon(4900)

Question 8435: I'm just checking for accuracy here... the equation is .
My answer was =(x^3+y^3)(x+y)(x-y). Is this correct?
Thank you.
Click here to see answer by rapaljer(3622)

Question 8705: when Y=6

5y or y+19

Click here to see answer by kryng88(1)

Question 8820: I am helping my son who is in the 4th grade, they are evaluating expressions. Can you help me with this:
(84 divided by z)- 6 for z = 7
and
(48 divided by h) x 2 for h = 8

Click here to see answer by Earlsdon(4900)

Question 8864: expression for value of 3-digit number whose hundreds, tens, and units digits are x,y, and z
Click here to see answer by prince_abubu(198)

Question 8855: Keith wrote the expression 10d to represent the number of dimes in d dollars. Is Keith's expression correct? Explain.
Click here to see answer by prince_abubu(198)

Question 8869: provide examples on writing algebraic expressions

Click here to see answer by rapaljer(3622)

Question 9063: how do i solve this problem step by step?
{[18-2*6]-[40/(17-9)]}+{48-13*3+[(50-7*5+2]}
Click here to see answer by longjonsilver(2297)

Question 9091: which unit multiplier would you use to convert 200ft. to inches? (the asnwers are....3ft.over 1yd., 1ft.over 12in., 12in.over 1ft,or none of these.)
Click here to see answer by longjonsilver(2297)

Question 9089: 3x+1=16 (The answers are... 3,4,5, or none of these)thank you very much
Click here to see answer by longjonsilver(2297)

Question 9090: please help me solve this problem: convert 37&1/2 to a reduced fraction. (The answers are...3/6,3/8.75/2, or none of these.)
Click here to see answer by longjonsilver(2297)

Question 8425: I don't know how to work out the following problem,
12 - [20 - 2(6^2 /3 x 2^2)]
Click here to see answer by DWL(56)

Question 9172: please help me to solve this equation 2x+5=8
Click here to see answer by jennifer(9)

Question 9265: -6 to 2nd power and (-6)to the 2nd power equal explain
Click here to see answer by rapaljer(3622)

Question 9238: (-3)-(-9)= the possibilites are.....-12, 12, -6,or 6
Click here to see answer by DWL(56)

Question 9273: When there is a minus in front of a parenthesis, do the minus within the parenthesis become a plus?
Click here to see answer by bonster(299)

Question 9480: HOW TO SOLVE THIS PROBLEM?
7a x 9b
Click here to see answer by rapaljer(3622)

Question 9588: Please help me evaluate the expression...
3 + 4[9-6 {2-5)]
step by step answer would be really appreciated.
Thank you!
Click here to see answer by thecampusnerd(13)

Question 9600: What does the following mean?
XIX 19
Click here to see answer by thecampusnerd(13)

Question 9600: What does the following mean?
XIX 19
Click here to see answer by kiwi(1)

Question 9600: What does the following mean?
XIX 19
Click here to see answer by Needhelp911(2)

Question 9798: 27*3(15+5)=
Click here to see answer by huntingmaster325(15)

Question 9847: -8(r-2)=40
Click here to see answer by CharStar(110)

Question 9962: (n-24)+3=7 please help me solve this equation thank you so much

Click here to see answer by longjonsilver(2297)

Question 10125: jane buys 5 pencils and 2 rubbers for 74 pence and her brother alan buys 2 pencils and one rubber for 31 pence. if each pencil costs x and each rubber costs y , write down a pair of simultaneous equations and solve them to find the cost of the pencil and rubber.
5x+2y=74
Click here to see answer by bonster(299)

Question 10495: If you could, please help me with these 2 problems.
The directions says to simplify the variable expressions.
(-14)(-y^2)
and
8(-y^2)^2
Click here to see answer by mathmaven53(29)

Question 10795: Please help me simplify the following expression by combining like terms....step by step instructions would be great!
3x(2x-3)+5(2x-3)

Thank you
Click here to see answer by rapaljer(3622)

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