4:5 = x : 15
let x be blue marbles
4(15) = 5x
x = 12
therefore 12 blue marbles
Answer
Now I'm not the best at this so don't go with mine but i'm gonna say
the expression could be n x 3 + 60
Step-by-step explanation:
if n = 4 then multiply 3 x 4 = 12 then 12 + 60 = 72
I don't know sorry i tried
Answer:
The answer is c
Step-by-step explanation:
Gm = √a*b for two numbers
hence gm = √6*42 = 2√63 = 15.87
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