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Lesechka [4]
3 years ago
6

Please help answer this <3

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
5 0

Answer:

12.5

Step-by-step explanation:

Ruth's shadow length over her height: 3/5

The length of the shadow of the slide over the slide"s height: 7.5/x

Use these ratios to solve for x: 3/5=7.5/x = 3x = 37.5

x= 12.5

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IF P(A)=1/3, P(B)=2/5, and P(AuB)=3/5, what is P(A^B)?
Bumek [7]

The probability of the union of two events is the sum of their probability, minus the probability of their interserction:

P(A \cup B) = P(A) + P(B) - P(A \cap B)

If we plug the known values into this formula, we have

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From which we can deduce

P(A\cap B) = \dfrac{1}{3} + \dfrac{2}{5} - \dfrac{3}{5} = \dfrac{2}{15}

So, the probability of A \setminus B is a bit less than P(A), we have to take away all events that belong to B as well:

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3 0
4 years ago
What is an explicit formula for the following recusive formula an=an-1+7;a1=2
Artyom0805 [142]
ANSWER
D.
EXPLANATION
The given explicit formula is

and

This implies that,

The explicit formula is given by:

We substitute the known values to get;
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Read 2 more answers
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