Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 57652: We are in rational expressions I do not understand this one I have (x+1)(x+3)
for my final answer
x^2+2x-15
----------
x^2-9
----------
x^2+6x+5
----------
x^2+4x+3
Please show me steps so I can see where I went wrong Thanks, dnn

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Question 57744: 5(a+6)
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Question 58004: Please help me with this problem:
5X^2 - 9X = 14
5x^2-9x-14=0
5x^2+5x-14x-14=0
5x(x+1)-14(x+1)=0
(x+1)(5x-14)=0
x+1=0 , 5x-14=0
x=-1 , x=14/5

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Question 58441: 3(2x - 3) - 6x = 10
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Question 58424: 3y(y+6)8 solve please
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Question 56924: 1. Write an english expression for a. _M_ b. 2a+3
2

2. The area of a rectangular garden is 18m2. If the width is 4.5m, how long is the garden? (A=lw)






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Question 58845: A man saw three girl in a field where they found a pile of apples and a boy. They decide to sleep in the field overnight and divide the pile ofapple in the morning. But during the night, one girl wakes up and gives one apple to the boy, and takes exactly 1/3 of the rest of the apples and went back to sleep. Then the second girl waked up and does the same thing . Later the third girl wakes up and does the same. In the morning they were fewer than 10 apples left. They each take 1/3. How many apples were there in the original pile.

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Question 58993: 2x - 1
Simplify ------ + 3x + 4.
4

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Question 59156: +105a%5E3b%2B27a%5E2b%5E2-33ab%5E3+ Can anyone help me solve this and more importantly, show me the process and some of the rules.
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Question 59156: +105a%5E3b%2B27a%5E2b%5E2-33ab%5E3+ Can anyone help me solve this and more importantly, show me the process and some of the rules.
Click here to see answer by fanks(6) About Me 

Question 59535: If a videotape cannot be recorded on for the first 1 1/3 feet, and there is a 180 foot video tape, how much can be recorded on by solving the equation: 180= t + 1 1/3 for t.
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Question 59656: Tell wheather the given value of the varible is a solution of the equation.
41-8x=-6x-23;x=-9.
Thanks for all of your help!

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Question 60079: I need help solving this question

-2=10b- 3

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Question 60078: I need help solving this question

-2=10b- 3

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Question 60077: I need help solving this question

-2=10b- 3

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Question 60191: Can someone help me with this problem?

I need to write the following phrase using symbols. Use the variable x to represent the number.
Eight less than three times a number.
Thanks,
Sher

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Question 60267: Simplify 9k-4+2k
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Question 60244: Find
(-8x^2y^3 - 3xy^2) + (5x^2y^3 - xy^2)

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Question 60349: Perform the indicated operation:
a. (8x^3-3x^2+7x-5)+(-2x^3-3x-10)
b. (8x^3-3x^2+7x-5)-(-2x^3-3x-10)

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Question 60668: what is a number plus a number divided by a number subtracted by a number then added by a number please help me find my problem out thank you
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 60962: 6x+9/3
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Question 61197: 4+2m-m

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Question 61421: x+7+4
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Question 61540: i have to find the equivalent to this expression.
4(12m/3)+9-2(3m)
choices are as follows:
A: 16m+9
B: 31m
C: 10m+9
D: 19m
This problem has confused me. Thanks!!!

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Question 61692: TRANSLATE TO AN ALGEBRAIC EXPRESSION:TWENTY LESS THAN SOME NUMBER.
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Question 61691: TRWANSLATE TO AN ALGEBRAIC EXPRESSION:TWENTY LESS THAN SOME NUMBER.
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Question 61770: 5x+2x-9=40 we just need to solve the problem.
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Question 62420: can you please solve this for me?
A magazine is printing an article that has 21 pages. The article has to be 48,000 words. Large print is 1800 words per page and small print is 2400 words per page. How many pages are small print?

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Question 62703: Find the perimeter of a triangle that has the following sides: 4x + 1, 7x – 2, and 7x +1. Find the expression that represents its perimeter.
I have come up with P=(4x+1)+(7x-2)+(7x+1). I am not sure if this one is correct. The solution seemed to come to me too easy. I hope that someone can let me know if the way I set this one up is correct.

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Question 62703: Find the perimeter of a triangle that has the following sides: 4x + 1, 7x – 2, and 7x +1. Find the expression that represents its perimeter.
I have come up with P=(4x+1)+(7x-2)+(7x+1). I am not sure if this one is correct. The solution seemed to come to me too easy. I hope that someone can let me know if the way I set this one up is correct.

Click here to see answer by checkley71(8403) About Me 

Question 62984: This problem is actually on a worksheet:
The speed of light is 3x10*8 meters per second. How long does it take light to travel the 149x10*9 meters between the sun and Earth/
The * means that it is superscripted. It is a power. 8 and 9 are the supersripted numbers.

Click here to see answer by checkley71(8403) About Me 
Question 62984: This problem is actually on a worksheet:
The speed of light is 3x10*8 meters per second. How long does it take light to travel the 149x10*9 meters between the sun and Earth/
The * means that it is superscripted. It is a power. 8 and 9 are the supersripted numbers.

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Question 63117: How do you solve for x: 3/2x+4x-3(2/3x+1/3-2)=2(5-1/2+3/2)also how do you solve for x: 2x+6x-4(3/2x+5)=4x-1/2+6x-5/2 please help me!?! Idont understand what and how to start the equation and how to get the answer.
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Question 63491: How do you solve problems like 4(m+1)-(m-2) i need to find out m , but dont know how
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Question 63746: I am suppose to evaluate. I get confused on evaluating and solving Please help!!!!
6x-9y+3z
--------
3
Thanks, lackinmath

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Question 63828: 1. 2(6k-1)=-38
2. 7w-3(4w+8)=11

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Question 64545: 1.)(8+5)[6+(2+5)] 2.)(1/4+1/2)9/11
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Question 64696: can you explain to me step by step if I need to change the whole number into an improper fraction to work the problem
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Question 64885: I wonder if anyone can help me solve this word problem. It's for my behaviorla science class, but was sondering if anyone out there knows how to figure this out.
There is a man who has a raft and cannot leave his dog, cat and mouse on the one side together. How does the man figure out a system for transporting each of the animals across the river without any of them getting eaten. He is suppose to take one at a time across and come back to get another.
You can put the cat on first and then come back and try and get the dog, but then when you go back to get the mouse the cat and dog fight. If you put the dog on first same thing. The only thing I can think of is to put the cat on first and then the man could put the mouse in his pocket and take the dog with him. Does that sound right? Or is there a way to solve this problem?
Lost.
Thanks, Sher

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Question 64950: Please help me with this equation: b2-2bc+c2
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Question 64950: Please help me with this equation: b2-2bc+c2
Click here to see answer by ptaylor(2198) About Me 

Question 65019: How do I go about simplyfing this?
y^3(10x^2 + 3y-1)(5x^3 - 3xy - y)

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Question 65166: What are the excluded values of n in the expression n+5/(8-n)(n+3) x n-9/2n-3?
Thank you for your time!

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Question 65374: Write each expression in simplest form:
I believe I follow the same factoring for fractions which shows:
4*1*x and 4*2*4
5*1*x and 5*7
This would leave me:
4 and 4*2*4
5 and 5*7
giving me the answer of:
4(4*2*4)
--------
5(5*7)
Is this correct?

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Question 65373: Write each fraction in simplest form:
-15x^3y^3
----------
-20xy^4
This is how I thought it should be done:
3*5*x*x*x*y*y*y
4*5*x*y*y*y*y
You cancel out the numbers that you can cancel which is 5 and then cancel out the letters that are equal which is 1 X and 3 Y's. This leaves you with the top efraction of:
3x^2 and the bottom fraction of 4y
The answer being :
3x^2
----
4y
Is this correct? Thank you for helping me out :-)

Click here to see answer by 303795(602) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840