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3 years ago

TALK TIME: 1/4 hour : $0.75 What is the unit rate in dollars per hour for Talk time ?

Mathematics

2 answers:

erik [133]3 years ago

8 0

0.75 x 4 = 3.00$
yw, how come that was so hard for you

AlexFokin [52]3 years ago

7 0

1/4 hour: $0.75
1 hour:? $
1×0.75÷1/4= $3 per hour, so the unit rate is 3 dollars per hour. Hope it help!

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What is the volume of the prism? 2inches, 2 1/4 and 4 inches

elixir [45]

Hi there!

»»————-　★　————-««

I believe your answer is:

18in³

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

Assuming that the figure is a rectangular prism:

⸻⸻⸻⸻

$\boxed{\text{Volume of a rectangular prism is:}}\\\\V = l * w * h\\-----------\\V = 2 * 2.25 * 4\\\\\boxed{V = 18}$

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Hope this helps you. I apologize if it’s incorrect.

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2 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.

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2 years ago

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Georgia: 70*12 = 840 words total.

Therefore, Georgia wrote 120 more words.

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dezoksy [38]

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