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3 years ago

(-1) + (-7) answer with work shown

Mathematics

1 answer:

lesya [120]3 years ago

4 0

Answer is -8

(-1)+(-7) turns into (1)+(7)=8 and then back to original which will be -8

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Suppose that the number of drivers who travel between a particular origin and destination during a designated time period has a

Bumek [7]

Answer:

0.381 is the probability that the number of drivers will be at most 18.

Step-by-step explanation:

We are given the following information in the question:

The number of drivers who travel between a particular origin and destination during a designated time period has a Poisson distribution with parameter μ = 20.

The Poisson distribution is the discrete probability distribution of the number of events occurring in a given time period, given the average number of times the event occurs over that time period.
The variance of Poisson distribution is equal to the mean of Poisson distribution.

a) P(number of drivers will be at most 18)

Formula:

$P(X =k) = \displaystyle\frac{\mu^k e^{-\mu}}{k!}\\\\ \mu \text{ is the mean of the distribution}$

$P( x \leq 18) =P(x=0) + P(x =1) + P(x = 2) + ... + P(x = 18)\\\\= \displaystyle\frac{20^0 e^{-20}}{0!} + \displaystyle\frac{20^1 e^{-20}}{1!} +...+ \displaystyle\frac{20^{18} e^{-20}}{18!}\\\\ = 0.381$

Thus, 0.381 is the probability that the number of drivers will be at most 18.

3 0

4 years ago

What is the inverse function of c(n) = 4n + 20? show your work

RUDIKE [14]

Answer:

c(n) = 4n +20

let m = c(n)

m= 4n +20

make n the subject

m -20 =n

inverse function of c(n)= n-20

It is a must that one replaces the m with the n in order to get the final answer

6 0

3 years ago

In this activity, you will predict the probability of an event from the relative frequency of the event. Pablo has some one-, fi

Vadim26 [7]

Answer:

Part A

6/40 = 0.15

Part B

16/40 = 0.4

Part C

10/40 = 0.25

Part D

8/40 = 0.20

Part E

The relative frequency of drawing a five-dollar bill is higher than the other relative frequencies. So, I can predict that Pablo is most likely to have more five-dollar bills than any of the others.

Part F

The relative frequency of drawing a one-dollar bill is lower than the other relative frequencies. So, I can predict that Pablo is most likely to have fewer one-dollar bills than bills of any other denomination.

Part G

It would not be a surprise if Pablo had fewer twenties than ones. The experiment was conducted only 40 times, and the numbers of times one-, ten-, and twenty-dollar bills were drawn are not very far apart. So, the number of twenties could be more or less than the number of ones. The same goes for tens and ones.

If you're on Plato an on slide 20 this Answer is for you:

If Pablo does an experiment 100 times, will the relative frequency be more accurate or less accurate than if he did the experiment 40 times? Why?

Answer: As the number of trials increases, the relative frequency becomes closer to the probability of the event. So, the relative frequency would be more accurate if the experiment were repeated 100 times rather than 40 times.

4 0

3 years ago

Help please. You don’t have to explain it

muminat

Answer:

1st square =0

2nd square =1

3 0

3 years ago

1) What is slope-intercept form?

adelina 88 [10]

Answer:

In general, the slope intercept form assumes the formula: y = mx + b.

m is the slope (lesson on slope ) mnemonic : 'm' means 'move'

b is the y -intercept ( lesson on the y-intercept ) mnemonic : 'b' means where the line begins.

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers