Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Tutors Answer Your Questions about Expressions-with-variables (FREE)


Question 109241: Find the perimeter of a rectangle. Write your
answer in radical form.
One side is sqrt 147 the other is sqrt 108

Click here to see answer by edjones(3292) About Me 

Question 109240: Simplify by combining like terms.
sqrt50 + sqrt32 - sqrt8

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Question 109242: Perform the indicated multiplication. Then simplify each radical expression.
sqrt7a * sqrt13

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Question 109243: Perform the indicated division. Rationalize the denominator if necessary. Then simplify
each radical expression.
12 + sqrt108 / 6

Click here to see answer by ankor@dixie-net.com(6691) About Me 

Question 109513: Please help I am not sure I am doing these right...

Solve each of the equations. Be sure to check your solutions.
Sqrt y + 7 = 5
I get -2 but not sure what the square root of -2 is Is there one?
Solve each of the equations. Be sure to check your solutions.
Sqrt 3x+ 1 = 4
I get one is one the square root of one?

Solve each of the equations. Be sure to check your solutions.
sqrt 2x + 1 + x = 7 I got x=2 and am not sure what the square root of two is.
Help on this one please.
Solve for a
c = sqrt a^2 + b^2

Thank you.

Click here to see answer by stanbon(26259) About Me 

Question 109586: I have a question on this word problem: A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the expression that represents its perimeter.
I have nothing on this I am at a lost and do not know where to beginI know i have to write an equation but sometimes this is just so foreign to me any assistance would be appreciated.
Thank you, Barb Neely

Click here to see answer by jim_thompson5910(13787) About Me 

Question 109604This question is from textbook
: Hello, can you please help me solve the equation below?
y + 1/2= - 1/3 ( x + 1/2)

Thanks inadvance for your help.
This question is from textbook

Click here to see answer by MathLover1(1183) About Me 
Question 109604This question is from textbook
: Hello, can you please help me solve the equation below?
y + 1/2= - 1/3 ( x + 1/2)

Thanks inadvance for your help.
This question is from textbook

Click here to see answer by stanbon(26259) About Me 

Question 109646This question is from textbook
: A 2000L tank containing 550 L of water is being filled with water at the rate of 75 L per minute from a full 1600 L tank. How long will it be before the two tanks have the same amount of water?
I have tried to figure out where to start but I'm lost. Thanks for your help.
This question is from textbook

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Question 109666: solve for x
2 = 1/x

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Question 109801: Simplify by combining like terms.
(3sqrt18)-(5sqrt2)

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Question 109802: Simplify each radical expression.
(sqrt2+ 3)^2

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Question 109841: Solve for a
c = sqrt a^2 + b^2

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Question 109778This question is from textbook Algebra 2
: Solving systems by substitution:
use substitution to slve each system of equations. Check your solution:
{3t-r=9
{r=2t+8
This question is from textbook Algebra 2

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Question 109799: Solve for a
c = sqrt a^2 + b^2

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Question 109890: solve the system by additio or substitution
3x+6y=0
x= 2/3
I have no idea how to work this problem with a fraction. Please help.

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Question 109951: The measure of an angle is 9 degrees more than twice its complement, find the measure of each angle.
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Question 110090: 5y-3x-y+2y=
Click here to see answer by jim_thompson5910(13787) About Me 

Question 110097This question is from textbook algebra 1
: 7)
y=6-x
2x-3y=22

13)
4x+5y=5
6x+7y=7

15)
x+9y=4
2x+3y=7
This question is from textbook algebra 1

Click here to see answer by MathLover1(1183) About Me 

Question 110105This question is from textbook algebra Structure and method book 1
: Help!! I have a test on Friday and do not understand how to do this type of problem. Please include all steps so I can understand how to apply for other problems. Thank you
1. A rectangular piece of plywood is trimmed to make a square by cutting a 4-cm strip off the top and a 2-cm strip off one side. If the area of the original piece is 74 cm^2 (cm squared) greater than the area of the square, find the dimensions of the rectangle.
2. A small city park consists of a rectangular lawn surrounded on all sides by a 330m^2 ( m squared) border of flowers 2.5 m wide. Find the area of the lawn if the entire park is 5 m longer than it is wide.

Thank you!!! SISI
This question is from textbook algebra Structure and method book 1

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Question 110101This question is from textbook Algebra Structure and method book 1
: I am having trouble understanding how to do this type of problem... I know the answer of the second by plugging in (guessing) But I need to know how to do the formula and steps for a test on Friday.
1. Jessica has 16 dimes and quarters. Whitney has twice as many dimes and 1/3 as many quarters as Jessica has. If they both have the same amount of money, what coins does each have?
2.Esteban has 16 coins that total $3.00 If he has only nickels and quarters, how many quarters does he have?
Thank you for your help!
This question is from textbook Algebra Structure and method book 1

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Question 110188This question is from textbook holt algebra 1
: containing (4,2) and (5,-4) solve using formula:y= mx+b This question is from textbook holt algebra 1

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Question 110230: I need to find the product for this equation: 4d+24 x 25
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Question 110321: 7x+9y=26
x=32-6y
Solve for y and x

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Question 110321: 7x+9y=26
x=32-6y
Solve for y and x

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Question 110321: 7x+9y=26
x=32-6y
Solve for y and x

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Question 110336: Please help me solve this problem. factor completely: solve: x^2-3x-40=0
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Question 110335: Please help me solve this problem. factor completely: solve: 12x^2-6x=0
Click here to see answer by scott8148(3382) About Me 

Question 110334: Please help me solve this problem. factor completly:7x^2+19x-36
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Question 110334: Please help me solve this problem. factor completly:7x^2+19x-36
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Question 110333: Will someone please help me solve this problem> factor completly:5x^2+2x-16
Click here to see answer by scott8148(3382) About Me 
Question 110333: Will someone please help me solve this problem> factor completly:5x^2+2x-16
Click here to see answer by jim_thompson5910(13787) About Me 

Question 110332: Please help simplify this problem:
A solar collector and its stand are in the shape of a right triangle. The
collector is 5.00 m long, the upright leg is 2.00 m long, and the base leg is 4.58 m
long. Because of inefficiencies in the collector’s position, it needs to be lowered
by 0.50 m on the upright leg. How long will the new base leg be? Round to the
nearest tenth.
Thank you,
Marco

Click here to see answer by edjones(3292) About Me 

Question 110279: using the two equations below solve for x and y using three different methods, substitution, addition, and graphing:
x-y=12
2x+y=3

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Question 110024: Write an expression for the sum of an even integer and the next two even integers. #12. The sum of i/4 of an integer, i/5 of the next integer, and i/2 of the following integer.
Click here to see answer by ankor@dixie-net.com(6691) About Me 

Question 110483: I know it says one problem per submition but this algebra question involves 2.
Simplify each of the following.
A) (4xSQUARED+2x+1)+(x-8)
B) (3xSQUARED-x+7)-(2xSQUARED-x+1)
Please Help Me If You Cannot do both can you please do atleast one i would greatly appreciate you doing both they're in the same question THANK YOU!!!!!

Click here to see answer by ptaylor(1578) About Me 

Question 110519: 0.6x-1.5=1.8
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Question 110565: Will someone please help me solve this problem? The problem states: find two positive integers that differ by four and whose product is 45.
Click here to see answer by bucky(1732) About Me 

Question 110558: Please help me solve this problem.The problem states: simplify and express final result with positive intergers as exponents: (4x^5y^-2)^3
Click here to see answer by checkley71(8405) About Me 

Question 110520: please help me solve this equation:0.6x-1.5=1.8
Click here to see answer by bucky(1732) About Me 

Question 110545: Say that every 6 out of 10 people on all the basketball teams in the county are girls. There are 467 boys in all. How many girls are there?
~I wish to have an explanation and an example of how to work it out. I don't understand how to figure it out, but my teacher wants it written in a certain way. I need to figure out how to cross multiply it and get the answer. Thankyou.

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Question 110595: Please help me solve this problem.the problem says, factor completely: x^2-49
Click here to see answer by checkley71(8405) About Me 

Question 110592: This one if tough! I have been using the distance = rate * time but I can not figure this one, please help!
A plane flies 720 mi against a steady 30-mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane’s speed in still air?

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Question 110606: solve the system by graphing
x+y=4
-x+y=2

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Question 110593: How do I solve these problems? The problem states to: find the product and simplif:(x-3y)^2
Click here to see answer by stanbon(26259) About Me 

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