2007-05-17 15:03:31 · 14 answers · asked by whattheheck 4 in Science & Mathematics ➔ Mathematics
x/30=24/60
x=24/60x30
x=24/2
x=12
2007-05-17 15:06:36 · answer #1 · answered by sam 3 · 1⤊ 0⤋
The answer is 12. This is a proportion. All of these can be solved by Product of Means = Product of Extremes. In this one (x) (60) = (30)(24). This would be 60x = 720 which solves to x = 12.
2007-05-17 15:10:16 · answer #2 · answered by Don E Knows 6 · 1⤊ 0⤋
x=30 (24/60) = 12
2007-05-17 15:07:36 · answer #3 · answered by Ferra 2 · 1⤊ 0⤋
X = 12
2007-05-17 15:06:49 · answer #4 · answered by Shortie216 2 · 1⤊ 0⤋
12
2007-05-17 15:06:29 · answer #5 · answered by Jax 3 · 1⤊ 0⤋
Since the two are equal, you'll be able to use cross-multiplication to solve this problem.
Multiply 24 by 30, then 60 by x.
24(30) = 60(x)
That becomes...
720 = 60x
Then, divide by 60 to get x by itself.
720/60 = x
That, then is equal to...
x = 12
2007-05-17 15:10:53 · answer #6 · answered by Anonymous · 1⤊ 0⤋
cross multiply 30(24)=x(60) 720=60x x=720/60 x=12
2007-05-17 15:08:42 · answer #7 · answered by dwinbaycity 5 · 1⤊ 0⤋
x/30 = 24/60
2x/60 =24/60
2x=24
x=12
2007-05-17 15:07:38 · answer #8 · answered by ironduke8159 7 · 1⤊ 0⤋
x/30=24/60
60x=720
60x/60=720/60
x=12
2007-05-17 15:09:27 · answer #9 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋
You can either use substitution or elimination. Substitution: 1)Solve one equation for y so that you have only one variable to solve for: y=2-7x 2) Now, knowing what y equals, plug the value in to the next equation so that you have 5x+2(2-7x)=4 3) Now solve for x. The answer is x=0 4) Now plug x back into the first equation to find y. The answer is y=2 5) Now plug in both your values to both your equations to see if the values are correct. _____________________________________ Elimination: 1) Multiply the WHOLE first equation by -2 so that you can cancel out the y's. This gives you: -14x-2y=-4 5x+2y=4 2) Now cancel out the y's by adding both equations. This leaves you with: -11x=0 3) Solve for x and find that x=0 4) Plug your x value into one equation to find the value of y. 5) 7(0)+y=2, so y=2 6) Plug in your two variables x=0 and y=2 into both equations to ensure that your values are correct.
2016-05-22 01:35:46 · answer #10 · answered by ? 3 · 0⤊ 0⤋