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3 years ago

I need to know what’s the answer to this problem

Mathematics

2 answers:

Lapatulllka [165]3 years ago

6 0

Answer:

radius = 16 inches

C = 32pi or approximately 100.48 inches

Step-by-step explanation:

We know the diameter is twice the radius

d = 2r

32 = 2r

Divide each side by 2

32/2 =2r/2

16 =r

The radius is 16 inches

The circumference is equal to

C = pi * diameter

C = pi *32

C = 32 pi inches

Letting pi be approximated by 3.14

The circumference is approximately 100.48 in

PtichkaEL [24]3 years ago

5 0

The radius is 16 inches.

This is because the radius is half the diameter and since we know that the diameter is 32 inches you just have to divide it by 2.

The circumference is 32 pi

This is because the circumference is 2 times pi times radius. This means that is is diameter times pi. This is because we know that that 2 times the radius is equal to the diameter.

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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:

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

$E(X_i)=2 \\$

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

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

Trying to do a question for my friend, can't quite figure it out though. Some help would be appreciated!

Troyanec [42]

Answer:

B : 5/6

Step-by-step explanation:

By doing some simple fraction, this would be the only thing that'd be correct!

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2 years ago

Simplify the expression. (1.08 x 10^-3) x (9.3 x 10^-3) ÷ 0.1

AlekseyPX

1.2555⋅10^−6
Explanation:

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2 years ago

the play began at 7:30p.m and included two 20 minute intermissions if the play lasts 2 hours and 35 minutes at what time did the

lord [1]

20×2=40 min

7:30+40 min= 8:10

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2 years ago

Read 2 more answers

What is the answer??

Gelneren [198K]

Answer:

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(y2-y1)/ (x2-x1)

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2 years ago