Math
3x4 to y+15
is constant and
y=3 when x=2
then when
y=12, x equals?
My answer was 13. Im not sure how to solve this question. Could you please go through the steps so I can see they match up with mines.
My Steps:
3xy:y+15 The original problem above says 3x4 and not 3xy. Try it again. I have 7/3 for the answer.
3x12:12+15
3x12:27
1227:3x
39:3x
13:x
I'll try again:
3x4:y+15
3x:12+15+4
3x:31
Now what. Is what I did right?
I need help with this problem.
Given that the ratio of
3x4 to y+15
is constant and
y=3 when x=2
then when
y=12, x equals?
My answer was 13. Im not sure how to solve this question. Could you please go through the steps so I can see they match up with mines.
My Steps:
3xy:y+15
3x12:12+15
3x12:27
1227:3x
39:3x
13:x
The problem said the ratio was a constant when x=2 and y=3
I substituted x = 2 and y=3 and solved for the constant.
(3x4)/(y+15) = k
I found 1/9 for k.
Then I started anew, substituted y=12 and solved for x.
There may be an easier way to do it but I think this will work.
I tried that did I not. I honestly don't understand. Can you please type it out.
Respond to this Question
Similar Questions

Algebra
I was given an answer to a question but what I really need are the steps to get there as I have other questions I need to answer the same way. Solve the equation w=Cr^2 for r I was given r=C/w This equation is meant to figure out 
Basic Math
I forgot how to solve for two variables... Please check if I solved both problems properly! Thank you. Equations: (solve for t and z) 12t + 4z = 80 2t + 4z = 20 My answer: t = 2, z = 14 The steps: (simplified it) z = 20  3t, z = 
math
1/4x1/6y=2 1/6x+1/5y=4 solve for x and y its suppose to be x equals 12 and y equals 30 need steps thanks 
Math
How do you solve this? 3300  .15 EDIT: I put this on a calculator and it says that it equals 3299.85 Is that right and if it is, what were to the steps to get this answer? 
Math
I think the answer is wrong online so I would like to know what the correct answer is before I teach a student! If it takes 6 cubes to build 3 steps, how many cubes will be needed for 11 steps? It sounds so easy but my answer 
Math
Solve for x: 5/x+6+2/x^2+7x+6=3/x+1 5/x+5+2/(x+6)(x+1)=3/x+1 5(x+6)(x+1)/x+6+2(x+6)(x+1)/(x+6)(x1)=3(x+6)(x+1)/x+1 5(x+1)+2=3(x+6) 5x+5+2=3x+18 5x+7=3x+18 2x=11 x=11/2 or 5 1/2 is my method correct? and I need assitance checking 
Math
Solve the following equation u+2=4 The question for me is how do I solve these types of problem. I already know that u=2, but I need to know the steps to get to the answer. Thanks, Kaai97 
Algebra again
I don't understand how to do this problems: Solve for the variable r, C=2PIr (PI is the pi symbol thing then r is next to it) and this problem solve for the variable l, S=B+1/2Pl I know this is the same question, but I somewhat 
math
Multiply and simplify 2/3*13 The answer is 22. Right? if you mean (2/3) * 13 or 2 / (3*13) i believe according to both your answer is wrong Is that (2/3)*13? If so, then (2*13)/3= something other than 22. Or if it is 2/(3*13) = it 
Advance Math.
Hello i'm haveing trouble with this problem, when I solve it I'm geting the A=24.375, but it does not plug in correctly. 1.5 + 4/5a =21 Solve what A equals I know the steps I just think i'm solveing it wrong.