Question

1:2=n:9. Can someone show me the answer

Answer 1

A: n=4.5

1/2 n/9

2×x=9
2×4.5=9

1×4.5=4.5

So n=4.5

Answer 2

n = 4.5

Explanation:

1 n

------= ------------

2 9

using cross products

1 * 9 = 2 * n

divide each side by 2

9/2 = 2n/2

9/2 = n

n = 4.5