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 178214: After fully simpifying the expression
2*x^2+7*x+3 over x^2+3*x-4 divided by x^2+7*x+12 over 2*x^2-3*x+1
The numerator is (2*x+1)*(2*x-1)
The denominator is
Remember to invert and multiply, factor and cancel
Ok, I can get the numberator, but I am not sure how to get the denominator, any help with is problem will be greatly appreciated. Thank you.

Click here to see answer by solver91311(5072)

Question 178072: 4.2+(3.8 x 3.8 x 1 over 4) - 5 =

Click here to see answer by Alan3354(6092)

Question 178506: x+y
a+b
x2-y2
a2-b2

Click here to see answer by Mathtut(3670)

Question 178430: (b^2/-3a^4)3 how do I write this without the parentheses?
Click here to see answer by Mathtut(3670)

Question 178430: (b^2/-3a^4)3 how do I write this without the parentheses?
Click here to see answer by Alan3354(6092)

Question 178618: solve for b
a:b=c:(d+6)
Click here to see answer by checkley75(3666)

Question 178898This question is from textbook Elementary Algebra
: Evaluate the expression using the given value
-0.2(x+3)+4; where x=1This question is from textbook Elementary Algebra

Click here to see answer by Mathtut(3670)

Question 178899: Evaluate the expression using the given value
2y^-4y+3: where y=1/2
Click here to see answer by Mathtut(3670)

Question 179129: I do not understand the process of evaluating expressions with fractions. I am trying to assist my 11 yr old daughter w/ her Math homework. Here is an example of a couple problems:
Evaluate n + 3/4 and 1 5/6 - n for each given value of n:
1.) n= 1/3

2.) n= 1 3/4
**PLEASE HELP US!!**
Click here to see answer by josmiceli(3012)

Question 179262: I am 32, my sister is 18. How old will I be when I am 3x's her age?
Click here to see answer by stanbon(26291)

Question 179143: a-2b/a+2b = 1k+1
solve for a:
Click here to see answer by monika_p(55)

Question 179597: Multiply out ( x + 6 )( x3 – x2 – 5x + 1 )
Click here to see answer by Mathtut(3670)

Question 179791: please solve for ?
? x 1/5=3/7
Click here to see answer by solver91311(5072)

Question 179937This question is from textbook
: Find -11/5+6/5This question is from textbook

Click here to see answer by Mathtut(3670)

Question 179981: If a tree is 6 feet tall and grows 2 feet a year, what is the expression for the growth of the tree in y years?
Click here to see answer by Mathtut(3670)

Question 180135: Find the equivalent expression with this denominator.
2/x= ?/x2
Click here to see answer by jim_thompson5910(13794)

Question 180371This question is from textbook
: Simplify: y^2-6y+9/y^2-3yThis question is from textbook

Click here to see answer by Mathtut(3670)

Question 180537: Multiply:
(2x - 1)(2x2 - 3x + 2)

Click here to see answer by bandgeek1749(3)

Question 180601: Q=7m+3n, R=11-2m, S=n+5, and T=-m-3n+8 to find following sum/difference.

Click here to see answer by swapna614(1)

Question 180644: what is m-(-2)=9
Click here to see answer by Mathtut(3670)

Question 180693: 6. If Leah is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue?
A. 8
B. 10
C. 14
D. 19
E. 21
Click here to see answer by stanbon(26291)

Question 180697: The width of a rectangle is fixed at 17 cm. What lengths will make the perimeter greater than 82 cm.
Click here to see answer by stanbon(26291)

Question 180690: 2. If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
A. 2 hours and 24 minutes
B. 3 hours and 12 minutes
C. 3 hours and 44 minutes
D. 4 hours and 10 minutes
E. 4 hours and 33 minutes
Click here to see answer by Alan3354(6092)

Question 180692: 5. Solve the following equation for A : 2A/3 = 8 + 4A
A. -2.4
B. 2.4
C. 1.3
D. -1.3
E. 0
Click here to see answer by HyperBrain(694)

Question 180638This question is from textbook
: 1/3*3^2-3/8*4^2This question is from textbook

Click here to see answer by checkley77(7072)

Question 180694: What is the length, in feet, of the hypotenuse of a right
triangle with legs that are 6 feet long and 7 feet long,
respectively?
F. square root of 13
G. square root of 85
H. 13
J. 21
K. 42
Click here to see answer by nerdybill(2446)

Question 181017: 17.3 - 2.7 = 10.55
Click here to see answer by Alan3354(6092)

Question 181137: x^2-4x+4
Click here to see answer by Mathtut(3670)

Question 181137: x^2-4x+4
Click here to see answer by solver91311(5072)

Question 181229: Hi please help,
3/4 PIE + 1/2 COOKIE - 1/4 COOKIE + COOKIE + 1/2 PIE - 1/4 PIE - 3/4 COOKIE.
THANKS
EVELYN
Click here to see answer by Mathtut(3670)

Question 181299This question is from textbook Beginning Algebra with applications
: Is -1 a solution of 4square -1=4y + 3 ?
I have trouble working these I do understand you have to do to the same side as you do to the other. please understand I am a 40 year old going back to school and never had algebra in high school at all. If I had only know I would have paid alot more attention in school and taken college bound courses.
thanks for your help and God BlessThis question is from textbook Beginning Algebra with applications

Click here to see answer by Mathtut(3670)

Question 181307This question is from textbook BEGINNING ALGEBRA WITH APPLICATIONS
: -5/6=x -1/4

-1/21=m+ 2/3This question is from textbook BEGINNING ALGEBRA WITH APPLICATIONS

Click here to see answer by eperette(173)

Question 181430: How do you Solve: 8*2-4/9+2=6?
Click here to see answer by Alan3354(6092)

Question 181432: How do You solve: 9-9*2+1=8?
Click here to see answer by Alan3354(6092)

Question 181432: How do You solve: 9-9*2+1=8?
Click here to see answer by stanbon(26291)

Question 181431: Jim works 5 days a week for 48 weeks a year how many days does he work in one year?
Click here to see answer by Alan3354(6092)

Question 181434: How do you solve:6*7-3*4+1=27?
Click here to see answer by stanbon(26291)

Question 181615This question is from textbook saxon math
: What factors do 18 and 24 have in commonThis question is from textbook saxon math

Click here to see answer by Edwin McCravy(2922)

Question 181737: Explain how the order of operations determines how you evaluate an algebraic expression. Be sure to explain the rules for addition, subtraction, multiplication, division and the use of grouping symbols. Use examples to illistrate your points.
Click here to see answer by Mathtut(3670)

Question 181757This question is from textbook Beginning Algebra with applications
: This question is from textbook Beginning Algebra with applications

Click here to see answer by Mathtut(3670)

Question 181864: Im trying to help son with homework. He says my answer is wrong. Please help.
Factor: x(x+2)+(x+2)
Thanks for your help.
Click here to see answer by Alan3354(6092)

Question 182546: Explain how we evaluate an algebraic expression for given values of the variables. How would we evaluate the expression "3x - 4y + 9" when x = 2 and y = 5?
thank you.
Click here to see answer by stanbon(26291)

Question 182652: t-6 for t=2
Click here to see answer by Mathtut(3670)

Question 182918: 1.
Simplify the algebraic expression
2x - 3y - 7y + 4x - 5
and evaluate it for x = 10, y = 4.
Identify the variables, constants, and coefficients in the simplified expression.

Click here to see answer by solver91311(5072)

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