Answer my math question I asked so many times I lost most of points

Mathematics

2 answers:

maks197457 [2]3 years ago

7 0

Answer:

f(x) = (x+1)^2 - 9

Evgesh-ka [11]3 years ago

7 0

Answer:

A = 1

B = 2

C = -8

Y intercept is (0,8)

The line of symmetry is x = -1

Min/max is (-1, -9)

Opens up

Domain is (-infinity, infinity)

Range is (-9, infinity)

The vertex is (-1,-9)

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two coins and a number cube are tossed at the same time. what is the approximate possibility that the coins show different sides

Stolb23 [73]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
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3 years ago

The number of typing errors made by a typist has a Poisson distribution with an average of two errors per page. If more than two

wlad13 [49]

Answer: 0.6767

Step-by-step explanation:

Given : Mean = $\lambda=2$ errors per page

Let X be the number of errors in a particular page.

The formula to calculate the Poisson distribution is given by :_

$P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}$

Now, the probability that a randomly selected page does not need to be retyped is given by :-

$P(X\leq2)=P(0)+P(1)+P(2)\\\\=(\dfrac{e^{-2}2^0}{0!}+\dfrac{e^{-2}2^1}{1!}+\dfrac{e^{-2}2^2}{2!})\\\\=0.135335283237+0.270670566473+0.270670566473\\\\=0.676676416183\approx0.6767$