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Ber [7]
3 years ago
15

A month with 31 days has the same number of Mondays and Wednesdays. How many of the seven days of the week could be the first da

y of this month?a. 2b. 3c. 4d. 5e. 6
Mathematics
1 answer:
Anvisha [2.4K]3 years ago
7 0

Answer: b. 3

Therefore, we will have the same number of Mondays and Wednesdays if the first day is either Monday, Thursday or Friday. Making 3 possible days

Step-by-step explanation:

Given that there are 31 days in the month.

And there are equal number of Mondays and Wednesdays within a 7 day bracket.

30 - 4(7) = 3days

After four weeks we are left with three days.

So, if the first day is;

Monday - we will have 5 Mondays and Wednesdays each

Tuesday - we have more Wednesday

Wednesday - we will have more Wednesday

Thursday - we will have 4 Mondays and Wednesdays each

Friday - we will have 4 Mondays and Wednesdays each

Saturday - we will have more Monday

Sunday - we will have more Monday

Therefore, we will have the same number of Mondays and Wednesdays if the first day is either Monday, Thursday or Friday. Making 3 possible days

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The time between arrivals of taxis at a busy intersection is exponentially distributed with a mean of 10 minutes. (a) What is th
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Answer:

a) 0.0025

b) 0.9975

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Step-by-step explanation:

Let X be the random variable that measures the time waited for a taxi.  

If X is exponentially distributed with a mean of 10 minutes,then the probability that you have to wait more than t minutes is  

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a)  

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Three different sets of objects contain 4, 5, and 12 objects, respectively. How
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\text{B. }240}

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(Multiplying each of the numbers also yields 240)

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please help. No links or fake answers. If your going to answer, may you please do one screenshot at the least. Thank you for you
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