3 years ago

Find the area of the circle

Mathematics

1 answer:

IRISSAK [1]3 years ago

4 0

Answer:

Step-by-step explanation:

A = πr^2

d/2 = 2

A= π(2)^2

A = 4π

A= 12.57 m^2

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For i≥1 , let Xi∼G1/2 be distributed Geometrically with parameter 1/2 . Define Yn=1n−−√∑i=1n(Xi−2) Approximate P(−1≤Yn≤2) with l

murzikaleks [220]

Answer:

The answer is "0.68".

Step-by-step explanation:

Given value:

$X_i \sim \frac{G_1}{2}$

$E(X_i)=2 \\$

$Var (X_i)= \frac{1- \frac{1}{2}}{(\frac{1}{2})^2}\\$

$= \frac{ \frac{2-1}{2}}{\frac{1}{4}}\\\\= \frac{ \frac{1}{2}}{\frac{1}{4}}\\\\= \frac{1}{2} \times \frac{4}{1}\\\\= \frac{4}{2}\\\\=2$

Now we calculate the $\bar X \sim N(2, \sqrt{\frac{2}{n}})\\$

$\to \frac{\bar X - 2}{\sqrt{\frac{2}{n}}} \sim N(0, 1)\\$

$\to \sum^n_{i=1} \frac{X_i - 2}{n} \times\sqrt{\frac{n}{2}}} \sim N(0, 1)\\\\\to \sum^n_{i=1} \frac{X_i - 2}{\sqrt{2n}} \sim N(0, 1)\\$

$\to Z_n = \frac{1}{\sqrt{n}} \sum^n_{i=1} (X_i -2) \sim N(0, 2)\\$

$\to P(-1 \leq X_n \leq 2) = P(Z_n \leq Z) -P(Z_n \leq -1) \\\\$

$= 0.92 -0.24\\\\= 0.68$

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3 years ago

Which graph represents the solution set of the system of inequalities?

Gala2k [10]

the solid line passes through (0,-3) and (0,9)

dotted line passes through (0,-3) and (0,-1)

see attached sketch

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3 years ago

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The government is the largest provider of public goods and services. give two examples of public goods and/or

nydimaria [60]

Law enforcement and public education

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2 years ago

Please help me<br>no links or I WILL report you<br>thank you in advance

mafiozo [28]

Answer:

the answer is 24 because if you 6 x 4 it's 24

also with 4x6 it's still 24

plz give me a brailnliess

Step-by-step explanation:

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3 years ago

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How do I find the volume of this need help

Irina-Kira [14]

To find the volume, you need to multiply l x w x h

5 x 7 x 10

5 x 7 = 35

35 x 10 = 350

350 is the correct answer

Glad I could help, and good luck!

AnonymousGiantsFan

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4 years ago