Are the ratios 3:6 and 1:9 equivalent?

No

Step-by-step explanation:

The ratio would have to be 1:2 or 6:12 or with other factors of the two numbers but the numbers have to be multiplied or divided by the same number to get to those factors in order for them to remain equivalent.

For example: If you were to multiply the 3 by 2 but the 6 by three you'd get 6:18 which simplified is 3:9 not 3:6 but if you multiply both the 3 and the 6 by 3 you'd get 9:18 with can by simplified to 3:6

just put them in order

step-by-step explanation:

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.