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Tutors Answer Your Questions about Linear-equations (FREE)
Question 51794: Suppose the sales of a particular brand of appliances satisfy the relationship:
S(x) = 140x + 100
where S(x) represents the number of sales in year x, with x = 0 corresponding to 1982. Find the number of sales in 1987
Click here to see answer by Nate(3495)   |
Question 51864: I'm having trouble with a word problem. It is a Number Problem, You have $30 in change in your drawer, consisting of dimes and quarters. write an inequity that shows the different number of coins in your drawer. I hinestly do do not know even where to begin. Please Help.
Click here to see answer by AnlytcPhil(958) |
Question 51822: using a phone card to make a long distance call costs a flat fee of $0.75 plus $0.25 per minute. What is an equation of the form y=mx +b for this situation, assuming y represents the total cost of calling for x minutes? How much does it cost to talk for 5 minutes?
Click here to see answer by funmath(2873) |
Question 52063: You have at least $30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different number of coins in your drawer.
The first thing I notice is that there doesn't seem to be enough information, but I sure that is not the case. I think that $30 would be represented as 30 is greater than or equal to 30.
Click here to see answer by tutorcecilia(2042) |
Question 52407: If a=1 ... b=2 ... c=3 ... and so on ...
19 , 5 , 24
My teacher says that if we give him the answer on anything (he said we can even give him the answer engraved on a desk) then we pass the class with an A.
Click here to see answer by Nate(3495) |
Question 52403: I am not fat or anything, but I was wondering if you could help me with this problem.
Lets say I weigh about 320lbs (i don't though), and I want to weigh 92lbs over a period of 100 days. How much weight must I lose per day to drop 228lbs?
I asked my teacher, and he says it's one of these:
a.) 100lbs a day
b.) 50lbs a day
c.) 2.28lbs a day
d.) Never going to happen in your life.
Click here to see answer by sodapop12(2) |
Question 52403: I am not fat or anything, but I was wondering if you could help me with this problem.
Lets say I weigh about 320lbs (i don't though), and I want to weigh 92lbs over a period of 100 days. How much weight must I lose per day to drop 228lbs?
I asked my teacher, and he says it's one of these:
a.) 100lbs a day
b.) 50lbs a day
c.) 2.28lbs a day
d.) Never going to happen in your life.
Click here to see answer by ChillyWiz(11) |
Question 52404: My mom says that dad likes his slope to be (50/1). I want to know what they are talking about...? My dad is a math guru, kinda. Also, he said on off days he has his slope (1/50). Now, he wants me to find the best slope for a medium day. Can you help?
Click here to see answer by rapaljer(3622) |
Question 52404: My mom says that dad likes his slope to be (50/1). I want to know what they are talking about...? My dad is a math guru, kinda. Also, he said on off days he has his slope (1/50). Now, he wants me to find the best slope for a medium day. Can you help?
Click here to see answer by venugopalramana(3286)  |
Question 52508: I need to graph:
2x - y = -16
I know how to graph, and can find the solution sets, however, I need to figure out the 'formula' (not sure if that's what it's called) but I mean, like, for the problem: x + 2y = 0 the 'formula' is y = -1/2x, and then you can plug any number in for x, and it works. When I try to get the 'formula' for 2x - y = -16 I can only figure out one that will work if x is a positive number, or only work if x is a negative number, but I can't figure out one that will work if x is either negative or positive. Could anyone help me figure out a 'formula' that will work no matter what number you plug in for x?
lol, I hope someone understands my question :o)
Thanks,
~ Jasmine
Click here to see answer by stanbon(26296) |
Question 52516: Fraction format Y/6 = y + 5
I have worked the problem as below but I don't understand the rest. Please assist with the missing steps.
6(y/6) = 6(y + 5)
y - 6y = 6y + 30
+ 6y 6y
------------------
1y = 12y + 30
-1y -1y
------------------
0 = 11y + 30
Click here to see answer by Earlsdon(4900) |
Question 52566: I need help with this problem, i dont know what |x+6|means i mean i know what the rest of the problum is but i dont know if it is like parenthases or somthing else well the whole problum is
|x+6|+8=4
the help would be most appreciated
thanks Pheobe
Click here to see answer by Nate(3495) |
Question 52576: Hi,
I just read about graphing slopes, formulas and all that stuff and am pretty confused...
When I try to solve the below problem, I'm getting the right answer, except I'm getting a negative answer instead of positive...
The problem:
"Find the slope and y-intercept of the line whose equation is given and then graph the line.
3x + 5y + 10 = 0"
My effort:
3x + 5y + 10 = 0 or
3x + 5y = -10 or
5y = -3x + -10 or
y = -3/5x + -2
M = -3/5
Y-intercept = (0,-2)
I checked in the back of the book, and the correct answer is:
M = 3/5
y-intercept = (0,2)
But even after going over the problem, I can't figure out why I get a negative, and they get a positive...
Any help would be very much appreciated! (I don't need help with the graphing part though, I think I've got that :o)
Thanks,
~ Jasmine
Click here to see answer by Nate(3495) |
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