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3 years ago

!!PLEASE HELP!! Stuck on this and need some help. !!40PTS!!

Mathematics

1 answer:

sladkih [1.3K]3 years ago

4 0

Answer:

Step-by-step explanation:

c) 2(50%)=75%

d) 1=0.75

e) 1=0.75

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A motorboat travels 204 kilometers in 6 hours going upstream. It travels 372 kilometers going downstream in the same amount of t

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Answer:

boat: 48 km/h
current: 14 km/h

Step-by-step explanation:

The upstream speed is ...

u = (204 km)/(6 h) = 34 km/h

The downstream speed is ...

d = (372 km)/(6 h) = 62 km/h

The speed of the boat in still water is the average of these values:

b = (34 kph +62 kph)/2 = 48 kph

The speed of the water is the difference between the boat's speed and the speed made good:

w = 48 -34 = 14 . . . km/h

The rate of the boat in still water is 48 km/h. The rate of the current is 14 km/h.

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3 years ago

Which of the following is an exponential function?

aleksklad [387]

Answer:

d) f(x)=3^x

Step-by-step explanation:

it is written in exponential function form

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3 years ago

At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.5 per day on a typical Wednesday. Let

Kamila [148]

Answer:

a) Cancellations are independent and similar to arrivals.

b) 22.31% probability that no cancellations will occur on a particular Wednesday

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given time interval.

Mean rate of 1.5 per day on a typical Wednesday.

This means that $\mu = 1.5$

(a) Justify the use of the Poisson model.

Each wednesday is independent of each other, and each wednesday has the same mean number of cancellations.

So the answer is:

Cancellations are independent and similar to arrivals.

(b) What is the probability that no cancellations will occur on a particular Wednesday

This is P(X = 0).

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-1.5}*(1.5)^{0}}{(0)!} = 0.2231$

22.31% probability that no cancellations will occur on a particular Wednesday

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3 years ago

PPLEAS HELP ME! PLEASE SHOW WORK! dominic can eat 10 hotdogs in 4 minutes. at this rate, how many hotdogs can he eat in 18 minut

emmainna [20.7K]

The answer will be 45

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3 years ago

M = ______? Please give right answer and no foolish just for points.! I WILL GIVE BRAINLEIST AND A THANKS AND FOLLOW AND 5 STAR

vova2212 [387]

Y = mx + b

Where m is the slope and b is the y-intercept

As you can already see it passes through the origin so b (the y-intercept) is (x, 0)

And the slope were it’s rise/run so it goes up 2.5 units and to the right 1 unit so it’s 2.5/1 = 2.5

m = 2.5

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3 years ago

Read 2 more answers