He could use the mode of 89.
Answer:
to solve this we do the oppisite of multiplication which is division
so 84 divided by 12 = 7 so that means that our mysterious k = 7
so reprhase the sentence so '' The product of 12 and 7 is 84
hope this helps:)
Step-by-step explanation
Three that are equivalent are 12:9 8:6 28:21
Answer:
20
Step-by-step explanation:

multiply both sides by 35

divide both sides by 35

The difference between 90% and 72% is 18%