markfaerman5408
06.08.2019 •
Mathematics
There are 36 bikes in a store (18 pairs). 1 pair(s) are yellow, 3 pairs are red, and the rest are purple. if you took out a purple bike and you didn’t put it back, what is the probability that you pull out another purple bike?
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Ответ:
27/36
Step-by-step explanation: It says there are 36 bikes (18 pairs), meaning that there are 2 bikes per pair because 18 multiplied by 2 is 36.
1 pair (2 bikes) are yellow.
3 pairs (6 bikes) are red.
For purple, add yellow and red together: 2 + 6 = 8. Subtract the total number of bikes from this: 36 - 8 = 28 purple bikes.
If you take out 1 purple bike, this leaves you with 27. The probability of choosing a purple bike out of the total (36), is 27/36.
Please let me know if this is correct or wrong.
Ответ:
Part A: Geometric Sequence
Part B:
Part C: a₈ = 512
Step-by-step explanation:
When we find the common ratio between the y-values (x-values are n inputs), we should see that we get r = 2. That means we have a geometric sequence.
Because we have a geometric sequence, our recursive formula is: . Simply plug in our known variables:
Now we need to find what y is when x = 8, so (I used explicit formula):
a₈ = 512