The second term in a geometric sequence is 20. the fourth term in the same sequence is 45/4, or 11.25. what is the common ratio in the sequence?

11.25 = 20 x r^(3-1)

11.25 = 20 x r^2

11.25/ r^2

0.5625 = r^2

square root 0.5625 = r

0.75 = r

r= 0.75 or 3/4

Step-by-step explanation:

answer: for each 3 girls there is 2 boys . 3: 2

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answer: .75 km

step-by-step explanation: