Tutors Answer Your Questions about Linear-equations (FREE)
Question 793168: Question: Jacob has $6.00 in dimes and quarters. He has ten more quarters than dimes. How many dimes and quarters does he have?
I don't know how to set up these kinds of problems... I tried this, but I don't really know what to do after this---- $6.00= (10+q)dx ----- It's probably wrong but can you please explain how you set it up and why?? thank you SOOO much!!!!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 795704: The figure shows a triangle ABC with A (1,1), and B (-1,4).
The gradients of AB, AC and BC are -3m, 3m and m respectively.
a) Find the value of m
b) Find the coordinates of C
c) Show that AC = 2AB
I have so far attempted question a), in which I got the correct answer:
m = (y2 - y1)/(x2 - x1)
m = 4-1/-1-1 = 3/-2 x 1/-3
m = 1/2
I have attempted question b) but i'm not really sure how to proceed. Let me show what I've tried:
m(BC) = 1/2
y - y1 = m (x - x1)
y - 4 = 1/2 (x+1)
y = 1/2x + 9/2
I'm not sure what to do next.
Please help me! Thank you.
Click here to see answer by Alan3354(69443)  |
Question 795869: i had this question on my math test, and i cant find out what did wrong, the question was " find the x-intercept and the y-intercept of the graph of the of the equation 9/8x+8y+18" my work i did was 9-8/8-1= 1/7
Click here to see answer by Alan3354(69443)  |
Question 796748: If G(x)= x^2-4x+1, and f(x)=-2x+5 find each value.
f(1/2)=?
f(x+2)=?
After solving do you mind telling the steps on how to do these kind of problems?
Please specify why you have to that and that if knowing how to solve.
Click here to see answer by luke94(89) |
Question 796865: Beth has $2.77 in her coin jar - all in pennies (x), nickels (y) and dimes (z). If she has 53 coins in all and four more nickels than dimes, find how many of each type of coin she has. Setup three equations in x, y, and z and solve the equations to find x(pennies), y(nickels), and z(dimes). Note only one equation has y and z only. I do not even know where to begin, once I find the equation I know how to solve them..I just cant find the equaitons
Click here to see answer by solver91311(24713)  |
Question 796865: Beth has $2.77 in her coin jar - all in pennies (x), nickels (y) and dimes (z). If she has 53 coins in all and four more nickels than dimes, find how many of each type of coin she has. Setup three equations in x, y, and z and solve the equations to find x(pennies), y(nickels), and z(dimes). Note only one equation has y and z only. I do not even know where to begin, once I find the equation I know how to solve them..I just cant find the equaitons
Click here to see answer by stanbon(75887) |
Question 797005: I have two Questions. My first one is, How do you algebraically figure out if vales of x and y can be the same?
For example, In this equation 12= 2x + 3y I can figure out through guess and check that the number 2.4 can be used for x and y at the same time.
Now for my next question.
Say you have something like this:
24= 4x + 8y
How do I determine algebraically what values of y and x will make 24 equal to 0?
Thanks so much!
Click here to see answer by KMST(5328)  |
Question 797365: this is my problem.... "2x − 8y + 15 = 0 write given equation in slope intercept form." I'm very rusty on math, im in college and have taken a few semesters off of math all together. i'm currently in college algebra. I don't know what form this is in because its been so long since ive done math... but i tried making it y=15+2x but it's telling me its wrong... i'm just really stuck and not sure how to even begin on this. and i know its probably really simple, but im horrible at math to begin with.
Click here to see answer by solver91311(24713)  |
Question 797517: How do you write the correct equation in slope intercept form? A line perpendicular to y=1/2x-1, x-intercept at 4. I would understand if it said y intercept at 4. And I know that the slope is the opposite reciprocal. Would this be right? Y=-2/1x then moved over to 4 on the x axis? How do you write that?
Click here to see answer by jerryguo41(197)  |
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