Answer:
6
Step-by-step explanation:
The mean is calculated as
mean =
let x be the fourth number, then
= 11 ( multiply both sides by 4 )
38 + x = 44 ( subtract 38 from both sides )
x = 6
The number on the fourth card is 6
Please help
1 answer:
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Assuming the return is compounded annually, the multiplier each year for rate "r" is (1+r). Then the multiplier for "t" years is (1+r)^t. We want this to be 2.
... 2 = (1+r)^t
... log(2) - t·log(1+r)
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The attachment shows the rounded calculator result for r={4%, 10%, 13%}.