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Question 81393: I submitted these questions a few days ago and got no response. This is due no later than tonite please help....
1. Simplify the rational expression:
x2 � 6x + 5
x2 � 25

2. Divide:
x2 � 9x + 8 � x2 � 1
2x � 4 2x + 2

3. Simplify:
√[64x10y2z46]

4. Perform the indicated operations:
4√[18] + 2√[32] �√[8]

Click here to see answer by ankor@dixie-net.com(22740)

Question 81412: a passenger train can travel 325 mi in the same time a freight train takes to travel 200 mi. If the speed of the passanger train is 25 mi/phr faster than the speed fo the freight train, find the speed of each.
Click here to see answer by stanbon(75887)

Question 81442: CARPENTRY
When building a stairway, a carpenter considers the ratio of risers to tread. If each stair being built is to have a width of 1 foot and a height of 8 inches, what will the slope of the stairway?

.... _________
. l (- riser
______
tread

I would be very much appreicated if you could tell me how to do this and the answer!thanx
Click here to see answer by stanbon(75887)

Question 81516: Hi, can someone please help me solve the following? Thanks in advance!
The length of a rectangular swimming pool is 2x-1 meters, and the width is x+2 meters. Write a polynomial that represents the area. Find the area if x is 5 meters.
Click here to see answer by Nate(3500)

Question 81515: I would appreciate any assistance with the following. Thank you
The width of a rectangular playground is 2x-5 feet, and the length is 3x+9 feet. Write a polynomial P(x) that represents the perimeter and then evaluate this perimeter polynomial if x is 4 feet.
Click here to see answer by mathdoc316(9)

Question 81518: Hi, can someone help with the following?
P dollars is invested at annual interest rate R for 1 year. If the interest is compounded semiannually, then the polynomial P (1+ r/2)squared represents the value of the investment after 1 year. Rewrite this expression without parentheses. Evaluate the polynomial if P=$200 and r=10%
Click here to see answer by dolly(163)

Question 81534: Can someone guide me through solving the following problem? John invested P dollars in a 2yr CD with an annual rate of return of R. After the CD rolled over three times, its value was P((1+r)^2)^3. Which law of exponents can be used to simplify the expression? Simplify it
Click here to see answer by rapaljer(4671)

Question 81533: Hi, I need help with the following: The perimeter of a rectangular backyard is 6x+6 yards. If the width is x yards, find a binomial that represents the length.
Click here to see answer by rapaljer(4671)

Question 81546: please help me to multiply these two problems i have been working on them four three days and i am mentally drained now i am really messing them up help please?
1. (-2x+3)^2
2. (x-4y)(x^2+4xy+16y^2)
Click here to see answer by tutorcecilia(2152)

Question 81556: I have the following: . The instructions are to divide. I believe the answer to be x-7 with a remainder of 10/x-2. However, I am not sure how to check if this answer is correct. Would you please help me solve?
Thank you.
Click here to see answer by doctor_who(15)

Question 81445: can someone please check this for me?

,
Click here to see answer by Edwin McCravy(20054)

Question 81570: how can i rewrite the middle term as the sum of two terms and then factor completely?
x^2-11x+24
Click here to see answer by tutorcecilia(2152)

Question 81600: How do you factor a polynomial with x^3?
One x cannot be factored out.
The equation to be factored is x^3 + 2x^2 - 16x - 32
Please help!
Click here to see answer by Earlsdon(6294)

Question 81622: How do you solve for x when it is in the denominator of a rational expression such as in the following:
1/8 - 3/5 = 1/x What are the restrictions? What is the solution?
Click here to see answer by checkley75(3666)

Question 81646: How do you solve for x when it is in both the numerator and denominator on both sides of a rational equation? And what are the restrictions for x? This is the nasty problem:
x-7/x-9 = 2/x-9
Click here to see answer by ankor@dixie-net.com(22740)

Question 81645: How do you solve for a when it is in both the numerator and denominator on the same side of a rational equation? And what are the restrictions for a? This is the problem:
a-2/a+3 = 3/8
Click here to see answer by tutor_paul(519)

Question 81653: can someone please help me multiply?
4x-40
over
x^2+10x
multiplied by
3x
over
10-x
Click here to see answer by rapaljer(4671)

Question 81653: can someone please help me multiply?
4x-40
over
x^2+10x
multiplied by
3x
over
10-x
Click here to see answer by tutorcecilia(2152)

Question 81654:
Click here to see answer by rapaljer(4671)

Question 81644: How do you solve for x when it is in the denominator on both sides of a rational equation? And what are the restrictions for X? This is the problem:
4/x = 5/x - 1/2
Click here to see answer by tutorcecilia(2152)

Question 81667: multiply the fractions:
.
Click here to see answer by Edwin McCravy(20054)

Question 81677: Add and write in simplest form: 4y/y^2+6y+5 added to 2y/y^2-1
All of this math is new to me, I need some serious help in explaining the steps that lead to the solution. Thanks
Click here to see answer by Edwin McCravy(20054)

Question 81671: Add and write in simplest form: 5/4cd+11/4cd= my answer is 16/8cd am I right?
Click here to see answer by Edwin McCravy(20054)

Question 81666: I have to write this in silmplest expression form:
4r^2-25s^2/2r^2+3rs-20s^2 Please Help
Click here to see answer by ankor@dixie-net.com(22740)

Question 81676: Subtract and write in simplest form: 3/x^2+4x+3 subtracted by 1/x^2-9
Click here to see answer by rapaljer(4671)

Question 81829: Solve:
4/x+1=3/x-2
I know when you divide you multiply by each others denominators. Then flip and multiply, then cancel out. But How does it work with an equal sign?
Click here to see answer by stanbon(75887)

Question 81815: What is the degree of this?
2x^3-3x^2+x+5
Click here to see answer by stanbon(75887)

Question 81815: What is the degree of this?
2x^3-3x^2+x+5
Click here to see answer by neta(14)

Question 81832: i need help on this equation: (5x^4-2x^2+1)(x^2-5x+3)

Click here to see answer by rapaljer(4671)

Question 81782: How do you divide monomials?
Click here to see answer by vertciel(183)

Question 81884: How would you simplify 6x+9 over 3x?
Click here to see answer by checkley75(3666)

Question 81900: 2h-6
_____= 2/3
6
Click here to see answer by Gigglefink(1)

Question 81914: x2-3x+2=0
Click here to see answer by stanbon(75887)

Question 81916: solve by graphing: x2-3x+1=0
Click here to see answer by stanbon(75887)

Question 81917: solve by using quadratic formula: 2x2+x-1=0
Click here to see answer by stanbon(75887)

Question 81909: Can you walk me through equations like this?
(X-5 over 5)+ (x over 4)=8
(5-2X over 2) -(4x+3 over 6) = (7x+2 over 6)
Click here to see answer by stanbon(75887)

Question 81930: FIND THE X AND Y INTERCEPTS FOR EQUATION
-6x - 12y = 12
Click here to see answer by ssonygill(12)

Question 82007: 4+8x=5x^2
The problem gives 2 answers for x
Click here to see answer by jim_thompson5910(35256)

Question 82035: how do I simplify this and give restrictions?
2x^2 + 7x -15
-------------
x^2 + x - 20
Click here to see answer by jim_thompson5910(35256)

Question 82044: (3x-2)-(4x+3)
Click here to see answer by checkley75(3666)

Question 82062: (X-6) X (X-6)
Click here to see answer by Earlsdon(6294)

Question 82069: If 300 jellybeans cost x dollars, how many jellybeans can you purchase at the smae rate for 50 cents?
A. 150/x
B. 150x
C.6x
D. x/6
E. 1500x
How would you solve this problem?
Click here to see answer by stanbon(75887)

Question 82068: I need help on this problem. You need to purchase a textbook for nursing school that costs $80.00. The sales tax on the book is 8.25%. You have $100. How much change will you receive back. I don't understand percentages that well and need help. Can you give for a step by step explanation for the solution?
Click here to see answer by stanbon(75887)

Question 82067: I need help solving the solution for A. The problem is A: 2a/3=8+4a. Can you show me step by step how to get A?
Click here to see answer by stanbon(75887)

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