Question

Is 2/9 = 10/45 a true proportion?

Answer 1

yes.

Explanation:

let us check. to be a proportion they must be equivalent

however, what do we multiply to get there? let us check..

`(2x)/(9x) =(10)/(45)`

cross multiply...

2x * 45 = 9x * 10

90x = 90x

yes, they will be proportional!

you can even do it without the X, i just put x in to make it clearer.

Answer 2

Yes

Explanation:

To find this out. If you divide the denominators by each other, they would need to be the same value as if you divide the numerators by each other

`45 / 9 = 5`

^ 45 and 9 were the denominators, we divide and get 5

Now for the numerators

`10 / 2 = 5`

^ 10 and 2 we're the numerators, dividing also gave 5