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4 years ago

9

Round 1.98 to the nearest tenth

2 answers:

Otrada [13]4 years ago

5 0

1.98 to the nearest tenth actually round to an even 2 because 9 is rounded up. Your answer is 2.0

VikaD [51]4 years ago

3 0

<span>2 or 2.0 is the answer </span>

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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):

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

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3 years ago

What is the area of the figure below to the nearest hundredth? A 12.25 in. C 52.25 in.? B 39.25 in. D 91.25 in 2

borishaifa [10]

the area of the figure below to the nearest hundredth? is 91.25

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Julli [10]

Answer:

Step 1: Multiply the entire first equation by 2.

Step 2: Rewrite the system of equations, replacing the first equation with the new equation.

Step 3: Add the equations.

Step 4: Solve for x.

Step 5: Find the y-value by substituting in 3 for x in either equation.

Step 6: Identify the solution as an ordered pair.

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3 years ago

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aivan3 [116]

20*17=340

The area is 340km^2

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4 years ago

After a sale, the price of a stereo was marked up $35 to a regular price of $310. What was the sale price?

Alecsey [184]

$275 you simply subtract 35 from 310 to find the sale price

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3 years ago

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