2 years ago

Is the average (arithmetic mean) of x and y greater than 20? the average (arithmetic mean) of 2x and 2y is 48. x = 3y?

1 answer:

4 0

2x + 2y = 48
2(x + y) = 48
x + y = 24
mean = 24/2 = 12

less than 20

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Remember that finding terms in a geometric sequence is done by multiplying the previous term by a common ratio $r$ . For example, we can say:

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