Keiko needs to memorize words on a vocabulary list for korean class. she has memorized 30 of the words, which is five-sixths of the list. how many words are on the list?

If 30 words is five-sixths of the list, then six-fifths of 30 should be the whole list (this can be proven by writing the equation and solving for x)

We're going to multiply 30 by the inverse of 5/6 (which is 6/5) to get the total number of words in the list.

Thus, there are 36 words on the list.

 Option C - 7 to 22.96  

Step-by-step explanation:

Given :  Sierra found that 15 meters is equivalent to 49.2 feet.

To find : Which of the following is an equivalent ratio?

Solution :

Sierra found that 15 meters is equivalent to 49.2 feet.

So, The ratio of the given situation is

Now, We check one by one

A) 3 to 8.84

B) 5 to 18.22

C) 7 to 22.96

D) 9 to 25.32

Therefore, The correct option which is equivalent is Option C.

So, An equivalent ratio is 7 to 22.96.