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spin [16.1K]
3 years ago
5

A stack of boards is 21 inches high. Each board is 1 3/2 inches thick. How many boards are there?

Mathematics
1 answer:
Elena-2011 [213]3 years ago
5 0
If the stack is 21ins and each board is 1 3/2 ins thick that means you 21/(1 3/2) so you end up getting 8.4. Because you can't have a part of a board you round the number down to 8 boards. 
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There are three boxes: one with two golden coins, one with two silver coins, and one with one golden coin and one silver coin. A
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Answer:

Step-by-step explanation:

From Bayes' theorem is stated mathematically as the following equation:[2]

{\displaystyle P(A\mid B)={\frac {P(B\mid A)\,P(A)}{P(B)}},}

where A and B are events and P(B) ≠ 0.

P(A) and P(B) are the probabilities of observing A and B without regard to each other.

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At this point, go through the attached file before you continue with part B.

Part B)

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note P(SS)=P(GG)=P(GS) = 1/3

P(silver from SS) = 1

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hence

P(Silver from SS) = 1/3

P(Silver from GS) = 1/3 *1/2

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0.8308 ± 1.96 × 0.0268491862

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6 0
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