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Tutors Answer Your Questions about Expressions-with-variables (FREE)
Question 129145: I have to solve this problem by the addition method. I do have a book but this problem is not out of a book,it's from a handout. I tried to follow the steps in the book to do this but its not clear enough for me.I'm not sure how to go about doing this.Do I just add them together and then plug in numbers that are given? The problem is:
The choice for answers are: A) (3,2) B)(-2,3) C)(3,-2)D)(-3, 5/2) E)(none of them)
I chose NONE OF THE ABOVE.
Thankyou so much!
Click here to see answer by Construe(3)   |
Question 129141: Hi I have a substitution problem. I think I have the answer ,but I don't think I am doing it correctly.Can you tell me if I am correct and can you show me your way ,the easiest way to do this using the correct answer? Somewhere in the steps, I am messing up. This problem is a handout and not in a book. The problem is:
x=3y+7 and 2x+5y=3
The choice of answers are:
A) 4,1 B) 6,3 C) 1,-2 D)4,-1 I CHOSE D (4 ,-1)
Thankyou so much!
Click here to see answer by checkley71(8405) |
Question 129167: I need help with solving equations. I am wondering if I solved this problem correct. If anyone could let me know if I solved this problem correct and let me know, that would be great, thanks!
Problem:
0.6(x-50)=18-0.3(40-10x)
Answer that I came up with:
6x-300=18-120+30x
6x-300=-138+30x
6x-162=30x
-162=24x
-6.75=x
Click here to see answer by checkley71(8405) |
Question 129169: I am a bit confused about this problem. I am seeing it as a negative 4 (-4). If anyone can tell me if I have performed this expression correct please let me know, thanks!
Problem:
2(a-4)-4(-3-2a) (I am seeing a negative 4 outside of the parenthesis here on this first step, am I correct?)
Answer that I came up with:
2(a-4)-4(-3-2a)
2a-8+12+8a
2.25=a
Click here to see answer by checkley71(8405) |
Question 129168: I am not to sure about this would some help me translate this to algebraic expression. use the letter d to represent some number and a decimal for the percent.
Here it is: The product of 43% and some number. Thanks so much for your help.
Click here to see answer by edjones(3292)  |
Question 129411: I tried a substitution problem on my own.I am tryng my best .I do not think I did it the proper way but I think I have the answer and I would like your opinion and help if I got it wrong.Please.The problem is:
x-4y=5
x-2y=1
The answer I got is -3,-2. Is this correct?
Thankyou
Click here to see answer by checkley71(8405) |
Question 129409: Can you help me with a substitution problem? I am still getting confused,usually with the second part of the problem.It's not in a book.I do not think there is a solution for both of them to make them come out correctly.I really need simple step by step help in order to learn how to do them on my own.Can I just plug each of the sets of numbers given? Your help is greatly appreciated. .The problem is:
x=2y-8 3x-2y= -12
The choices were: a)2,-3 b)0,4 c)-4,4 d)-2,3 e)none
I CHOSE E - none of them (I almost chose C)
Click here to see answer by checkley71(8405) |
Question 129674: I just need a second opinion to check that I'm right.
What is the 2007th letter of the sequence ILOVEMATHILOVEMATHILOVEMATH..... since 2007 divided by 9 is 223...a whole number...the sequence must end in "H". Right?
Click here to see answer by bucky(1732) |
Question 129933This question is from textbook algebra
: Hey! Allright- Well my problem isto solve by using the Substitution method! I am having a small difficulty with it.
the problem is *y=5x
2x+y=28*
What I got was (4,20) The problem I am having is cheaking to see if it is the right answer.
Please help me with my problem?
Please and Thank You=)This question is from textbook algebra
Click here to see answer by jim_thompson5910(13787) |
Question 130088This question is from textbook algebra
: Hi! So I am having trouble with Subsitiution. With this question is says to either solve by subsititution addition or the subtraction method.
This is what I got for the problem: m=-6 n=-9, Which was wrong.
The problem is 2m=n-3 3m=2n-9
Any help I can get for it. Very much apprecciated=) THanks!This question is from textbook algebra
Click here to see answer by oscargut(682)  |
Question 130088This question is from textbook algebra
: Hi! So I am having trouble with Subsitiution. With this question is says to either solve by subsititution addition or the subtraction method.
This is what I got for the problem: m=-6 n=-9, Which was wrong.
The problem is 2m=n-3 3m=2n-9
Any help I can get for it. Very much apprecciated=) THanks!This question is from textbook algebra
Click here to see answer by checkley71(8405) |
Question 130089This question is from textbook algebra
: This is a substitution method. The problem I am having with it is incomplete cheack. Which I don't know how to do, could you help me?
The problem is:
x=1y
- (The 1 over the 5 indicates it's a fraction)
5
3x+2y=26
Please and Thank You for your time
This question is from textbook algebra
Click here to see answer by stanbon(26259) |
Question 130243This question is from textbook 
: 9. the bill for five glasses of apple juice and four salads is $9.50,but the bill for 4 glasses of apple juice and 5 saladas is $10.30. what would be the bill for a glass of juice and a salad? HELP?This question is from textbook
Click here to see answer by scott8148(3382)  |
Question 130330: Hello,
This is my algebra question, it is not an exam...just a sample test, but I am not sure exactly what it is asking.
Describe whether the given relations describe y as a function of x. Give the doman and each relation and/or function.
y = -x^2
xy=1
y = -x^3
It also says sketch here (underneath each question). Do I solve the problem, give the domain and describe whether the give relations describe y as a function of x? I believe that (a) and (c) is "no, y is not a function of x, but that (b) is.
Thank you for your help.
Click here to see answer by solver91311(5072)  |
Question 130340: Hi,
I cannot find information on this question anywhere online or in my text.
Explain how the expression a^2 + b^2 and (a+b)^2 differ?
I have no idea how they differ and cannot figure out how to find the info. I must be looking in the wrong place, have spend 2 days on this question.
Thanks so much.
Click here to see answer by edjones(3292) |
Question 130250This question is from textbook 
: Ok, A group of 59 people are traveling by bus. Each child (c) has 2 pieces of luggage and each adult (a) has 3 pieces of luggage. The total number of pieces of luggage is 124.
Write a system of equations that describes the abouve sitituation
How many adults are on the bus? How many children?This question is from textbook
Click here to see answer by scott8148(3382) |
Question 131635: in my homework it says to give the point that represents the intersections of the lines? i dont get how to solve the problem. i would like to know what is the equation or solution to the problems so i can do the rest by myself.the problem is y=x and 4x+5y=9 how do u find where the intersections of the lines is
Click here to see answer by stanbon(26259) |
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