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2 years ago

To be honest, I really don’t understand this and need someone to help me out.

Mathematics

2 answers:

gizmo_the_mogwai [7]2 years ago

6 0

Answer:

Explaintion:

n=13. 13+2 = 15

I hope this helps ( :

bazaltina [42]2 years ago

4 0

Answer: B

Step-by-step explanation:

because 4 is the number of (n) plus the 2

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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 :-

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

Hence, the required probability :- 0.6767

6 0

3 years ago

If 1 pound of grapes cost 3.25 and2 pounds cost 6.50 what do 3,4,5,6,7,8,9 pounds cost?

11Alexandr11 [23.1K]

3, would be 9.75
4, would be 13
5, would be 16.25
6, would be 19.50
7, would be 22.75
8, would be 26
9, would be 29.25
OR 3.25x = y (y being 3-9)

4 0

2 years ago

3(12)=2(y-1) *plzz answer my question*

Leona [35]

Step-by-step explanation:

3(12)=2(y-1)

36=2y-2

36+2=2y

38=2y(Divide both sides by two)

y=19

7 0

2 years ago

Using the rule y=4x-1, find the value of y when x is 5

Kazeer [188]

y=19!! hope this helps :)

3 0

3 years ago

Read 2 more answers

Nicole is 56 inches tall and has an 84 inch shadow. Julie is standing next to Nicole and has a 96 inch shadow. How tall is Julie

Natalka [10]

Answer:

56+12=68. 68 inches

Step-by-step explanation:

julie‘s shadow is 12 inches taller than Nicole’ so you would just add 12 to 56.

7 0

2 years ago