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2 years ago

Simplify: −51 ÷ 3 A. −19 B. −17 C. 17 D. 19

Mathematics

1 answer:

svetoff [14.1K]2 years ago

7 0

Answer:

$\fbox{B. = −17 }$

Step-by-step explanation:

$\sf- 51 \div 3$

$\sf - 17$

$\boxed{\sf3 \times - 17 = - 51}$

Hope It's Helps``

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An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 4.

Leno4ka [110]

Answer:

P(4 non-work-related e-mails)=0.1933

P(7 or more non-work-related e-mails)=0.1442

P(3 or less non-work-related e-mails)=0.3771

Step-by-step explanation:

A Poisson distribution is useful to measure the probability of a number of events in a given period, in this problem, receiving a non-work-related e-mail would be the event and an hour would be the period of time.

Its probability mass function is $f(k; \lambda) = P(x=k) = \frac{\lambda^k e^{-\lambda}}{k!}$ , being k the number of events and λ how many sucesses (events) are per period of time (4.3 in this case)

First, we calculate what is the probability of receiving exactly 4 e-mails:

$f(k; \lambda) =P(k=4) =\frac{4.3^4 e^{-\4.3}}{4!}=0.1933$

As k is a discrete variable, to know the joint probability of different number of events we add the probability of each value.

The probability of receiving 7 or more is the sum of P(7), P(8), ..., P(∞):

$P(k\geq 7 ) =\sum_{i=7}^{\infty}\frac{4.3^i e^{-\4.3}}{i!}=0.1442$

Last, the probability of receiving 3 or less is the sum of P(0), P(1), P(2) and P(3):

$P(k\leq3 ) =\sum_{i=0}^{3}\frac{4.3^i e^{-\4.3}}{i!}=0.3771$

3 0

3 years ago

Ms. Rodriguez broyght 10 oranges for afternoon snak that she needs to share evenly with the 15 players on her daughters soccer t

daser333 [38]

Answer:

she should cut them into thirds

Step-by-step explanation:

there are 10 oranges while there are 15 players.

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3 years ago

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storchak [24]

Answer:

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Step-by-step explanation:

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skad [1K]

Step-by-step explanation:

-5y=35

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