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2 years ago

8cm 20cm What is the volume of this cylinder?

Mathematics

1 answer:

Firlakuza [10]2 years ago

8 0

Answer:

Step-by-step explanation:

V = πr2h = π·82·20 = 4021.2386 cm ^3

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bryan is laying down sod in his yard to grow a new lawn.each piede of sod is a 1 foot by 1 foot square. How many pieces of sod w

siniylev [52]

Sod=1*1
to cover =30*14
to cover=420
to cover divided by one piece
=420/1
=420 pieces

3 0

3 years ago

What’s -6-25 divided by 5+5 ?

Inessa [10]

Answer:

-6

Step-by-step explanation:

6 0

3 years ago

An element with mass 970 grams decays by 27.7% per minute. How much of the element is remaining after 13 minutes, to the nearest

Mnenie [13.5K]

Basically, 27.7% of 970 is 268.69 grams, if 13 minutes so i’m pretty sure it’s 268.69 X 13 = 3492.97, it cannot be deduced from 970 unless it became −2522.97, is that the answer ur looking for?

6 0

2 years ago

HOW TO PUT 12/15 IN SIMPLEST FORM

mr_godi [17]

Answer:

4/5

Step-by-step explanation:

we divide by 3 the numerator and the denominator:

(12/3) / (15/3)

we have:

4/5

5 0

3 years ago

let X represent the amount of time till the next student will arriv ein the library partking lot at the university. If we know t

AlekseyPX

Answer:

0.606531 = 60.6531% probability that it will take between 2 and 132 minutes for the student to arrive at the library parking lot.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

Mean of 4 minutes

This means that $m = 4, \mu = \frac{1}{4} = 0.25$

Find the probability that it will take between 2 and 132 minutes for the student to arrive at the library parking lot:

This is:

$P(2 \leq X \leq 132) = P(X \leq 132) - P(X \leq 2)$

In which

$P(X \leq 132) = 1 - e^{-0.25*132} = 1$

$P(X \leq 2) = 1 - e^{-0.25*2} = 0.393469$

$P(2 \leq X \leq 132) = P(X \leq 132) - P(X \leq 2) = 1 - 0.393469 = 0.606531$

0.606531 = 60.6531% probability that it will take between 2 and 132 minutes for the student to arrive at the library parking lot.

4 0

3 years ago