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 18486: My questions are. How do you write an expression for.
1.)nince less than twice a number equals the same number increased by four.
2.)six less than five times a number is twenty-nine.
It has been a very long time since I have been in school& trying to figure out how to write expressions is very confusing to me.
Thanks!
Click here to see answer by piglet162431(90)

Question 18858: Hello:
This is my first time here, and I am new to this. I am trying to prepare for a college entrance exam. (the math portion consists of pre-algebra and algebra.) Being that I Flunked out of both courses in high school, I am scared to death. This all seems so simple, yet I just do not comprehend. I am working with my husband who is an accountant and we have been able to figure out a few of the problems. But this is one we cant. I do not remember how to multiply or divide fractions. Thank you for ANY help on this.
Problem:
1/2 + (2/3 divided 3/4)-(4/5 x 5/6) = ?
Click here to see answer by xcentaur(357)

Question 19119: Solve algebraically for the variable:
x + 2 = 4 (3x -2)
I got this:
x + 2 = 12x - 8
2= 11x - 8
10 = 11x
10/11 = x <-------- answer
Is this correct?
Click here to see answer by Alwayscheerful(414)

Question 19112: Evaluate the algebraic expression:
10 + 3x / (2 + 2x) when x = 5
Click here to see answer by Alwayscheerful(414)

Question 19114: Use the distributive property to rewrite the expression without parentheses:
3 (-5s - 2)
My answer was -15s - 6
My college tutor came up with 3(-5s) - 3(2) .. but I don't get that, because thee are still parenthesis.
Is my answer correct?
Click here to see answer by Alwayscheerful(414)

Question 19118: Solve algebraically for the variable:
x + 2 = 4 (3x -2)
I got this:
x + 2 = 12x - 8
2= 11x - 8
10 = 11x
10/11 = x <-------- answer
Is this correct?
Click here to see answer by sukusu(21)

Question 19212: 4-(x+1)=8
Click here to see answer by sukusu(21)

Question 19212: 4-(x+1)=8
Click here to see answer by wuwei96815(245)

Question 19267: 8-1.2y=2
Click here to see answer by Alwayscheerful(414)

Question 19420: Evaluate the variable_expression xyz for the given values or x, y, and z. x=4, y=0/8, and z=1 5/9.
Click here to see answer by xcentaur(357)

Question 19542: Write an expression for the pattern
50+1, 50+2, 50+3, .....
Click here to see answer by MelanieBCC(40)

Question 21032: a=2h(l+w)...how do i work this?
Click here to see answer by Here2Help(19)

Question 21135: I have an algebra expression that I am not getting a whole number answer for. I got this:
3b+2=6(3-b)
3b+2=18-6b
9b+2=18
9b=16
b=1 7/9
Is this correct? Please help!!!
Click here to see answer by wuwei96815(245)

Question 21186: Solve for what z equals.
5xZ+3=Z+4x5-1

Please help it seems impossible to me
Click here to see answer by longjonsilver(2297)

Question 21520: Pretty please help
faCTOR
15+3Y-15X^2-X^2Y
Click here to see answer by Earlsdon(4900)

Question 22318: The equation below is for short-run equilibrium output for economics, I get how to solve for the first part of the equation and I come up with 3.33, I just don't get the second part of the equation, the 1800, when entering the formula with parenthesis, I come up with (-580)
Y=(1/(1-0.7)[820-0.7(600+600+600+200)]= 3.33 x 1,800=6,000
Click here to see answer by stanbon(26291)

Question 22568: A famous mathematician of the 1800's once said: "I was x years old in the year x squared." In what year did the mathematician say this, and what year was he born?
Click here to see answer by stanbon(26291)

Question 23016: -22=-14-q
Click here to see answer by stanbon!(97)

Question 23058: I need step-by-step help on solving problems such as the following.
(x^3-6x^2+7x-2) / (x-1)
Click here to see answer by rapaljer(3622)

Question 21828: IF 5X10n=0.0005THENn=?
Click here to see answer by rapaljer(3622)

Question 23401: Kyle had 36 books in his locker. Some were library books and the rest were telephone books. the number of library books and telephone books combined is equal to twice the number of textbooks. the number of textbooks and telephone books combined is equal to 3 times the number of library books. how many of each type of book were in Kyle's locker?
Click here to see answer by stanbon(26291)

Question 23537: Please simplify (5a^2 + 2a)(6m^2)
Click here to see answer by rapaljer(3622)

Question 23667: what does "for" stand for in a question? is it a division term or a multipulcation term please tell me i need to finish my homework!!!
Click here to see answer by rapaljer(3622)

Question 23666: what does for mean like 1\8y for y = 4/9
Click here to see answer by rapaljer(3622)

Question 23658: Write an expression for the number of hours in an unknown number of seconds
Click here to see answer by rapaljer(3622)

Question 23650: i dun get how u take the numbers out of the parentheses!
such as:
(2a+b)2 (squared) =...what

Click here to see answer by rapaljer(3622)

Question 23713: please help me
19=a-4
Click here to see answer by stanbon(26291)

Question 23657: please help me 1/4 (9-2z) = -5
-8 = 4/5 k
3/4 - 1/3z = 1/4
Click here to see answer by stanbon(26291)

Question 23726: 7-(7+3/4-2)+(-4)-8+4-(24)
5/9+8(4(3)+9)7/8
help solving i get confiused
Click here to see answer by AnlytcPhil(958)

Question 23791: This question was on a test of mine.
it calls for simplification: (2x^2-32)/(x-4)
my answer was: 2x-8 but i got it wrong
What is the real answer?
Thank you in advance for your help,
ivisol88
Click here to see answer by stanbon(26291)

Question 23794: how do i subtract or add this correctly?
(4/a-5)-(1/5-a)
My answer was 4/a+a-26/5
What is the correct answer?
Thank you so much
Click here to see answer by stanbon(26291)

Question 23884: 2(5r+3)=5 I cant figure out how this is solved
Click here to see answer by AnlytcPhil(958)

Question 24032: Elliot is 58 years old.Write an expression for the number of years by which Elliot's age exceeds that of his daughter,who is y years old?
Click here to see answer by rapaljer(3622)

Question 24031: Elliot is 58 years old.Write an expression for the number of years by which Elliot's age exceeds that of his daughter,who is y years old
Click here to see answer by rapaljer(3622)

Question 24021: how do you simplify (2ab third power)second power.
Click here to see answer by rapaljer(3622)

Question 17261: How do I find the leading coefficient of p(x)=(x+2)^17?
Click here to see answer by kev82(145)

Question 24347: 6p-2(5p+1)=2p+4
Click here to see answer by askmemath(368)

Question 24378: How do you solve:
(700 + y) / 7 = 106
thank you
Click here to see answer by AnlytcPhil(958)

Question 24454: -5[4 -(-3)(2)]=?
Click here to see answer by AnlytcPhil(958)

Question 24737: I am a grandmother trying to help my grandson with pre algebra, he's in Texas and called me with this problem. (problem) n x 365=. Please help its been a long, long time since I've had algebra. Please?
Click here to see answer by rapaljer(3622)

Question 24911: the question is
evaluate each expression for r=6
5r ____________ r _________
-
2
I don't understand how to do this the teacher assigned it and never explained it could you tell me how to figure it out?
Also the next question I have is
Which number could be the value of m to make the number sentence below correct?
7x2>3m
the answers to choose from are 4,5,6,7 i figured that this is wrong None make sense to me Thanks
Click here to see answer by pwac(251)

Question 25122: 16000(1+r)^2=25000
Click here to see answer by askmemath(368)

Question 25275: Solve for x: 50/x=10?
Click here to see answer by askmemath(368)

Question 25296: how do you work out -10 +6 x (-3) / 6 + 9 ??
Click here to see answer by AnlytcPhil(958)

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