3 years ago

NEEEEED HELLLLLLLPPPPPP!!!!!!

Mathematics

1 answer:

horsena [70]3 years ago

8 0

The first equation by 3 and the second by 2 is the answer

This will make the x terms 6x and -6x which will disappear when added.

Its C

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The number of accidents that occur at a busy intersection is Poisson distributed with a mean of 4.5 per week. Find the probabili

Mariana [72]

Answer:

a) 0.01111

b) 0.4679

c) 0.33747

Step-by-step explanation:

We are given the following in the question:

The number of accidents per week can be treated as a Poisson distribution.

Mean number of accidents per week = 4.5

$\lambda= 4.5$

Formula:

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

a) No accidents occur in one week.

$P(x =0)\\\\= \displaystyle\frac{4.5^0 e^{-4.5}}{0!}= 0.01111$

b) 5 or more accidents occur in a week.

$P( x \geq 5) = 1-\displaystyle \sum P(x$

c) One accident occurs today.

The mean number of accidents per day is given by

$\lambda = \dfrac{4.5}{7} = 0.64$

$P(x =1)\\\\= \displaystyle\frac{0.64^1 e^{-0.64}}{1!}= 0.33747$

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3 years ago

Coach Riley asked 35 students to count the number of push-ups they completed during class. The results are displayed in the box

yKpoI14uk [10]

Answer:

I think A

Step-by-step explanation:

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3 years ago

Nick and Nia are doing chores. Nia has a piggybank with over 100 dollars from chores saving .Nick have a piggybank with over 20

SOVA2 [1]

Answer:

Nia did the chores the more

Step-by-step explanation:

100 is more than 20

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2 years ago

Find the domain for the rational function f of x equals quantity x end quantity divided by quantity x minus 5 end quantity.

Gennadij [26K]

Answer:

All real numbers except for 5.

Step-by-step explanation:

$f(x)=\frac{x}{x-5}$

The domain of rational functions is determined by the denominator. The denominator cannot equal zero since if they do, the function will be undefined.

Thus, we need to find the zero(s) of the denominator to determine the domain.

$x-5=0$

$x=5$

Therefore, the domain of the rational function is all real numbers except for 5.

In set builder notation, this is:

$\{x|x\in \mathbb{R}, x\neq 5\}$

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3 years ago

the relative frequency of getting a head when tossing a coin is 3/8 how many heads would you expect if the coin is tossed 400 ti

Olenka [21]

Around 150 times my dude

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3 years ago