2:x and 12:18
a.3
b.4
c.6
okay so that's how i do it
explanation a easier way
to doit
i don't understand
2:x and 12:18
2/x = 12/18
Cross multiply
12x = 36
Solve for x.
x = 36/12 = 3
i neeed more
More what?
That is the easiest way. I urge you to learn how to set up and solve proportions. They have helped me a lot throughout my long life -- starting about 8th grade.
To find the missing number in the ratio 2:x, you can use cross multiplication.
Cross multiplication involves multiplying the numerator of the first ratio by the denominator of the second ratio, and then multiplying the denominator of the first ratio by the numerator of the second ratio.
In this case, for the ratios 2:x and 12:18, the equation would be:
2 * 18 = 12 * x
36 = 12x
Now, you can solve for x by dividing both sides of the equation by 12:
36/12 = x
x = 3
Therefore, the missing number in the ratio 2:x is 3 (option a).