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lyudmila [28]
3 years ago
11

Can someone please help me asap I’ll mark brainlist

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
6 0

Answer:

9/20

Step-by-step explanation:

Not hard. Multiply top and bottom by the other number. 3*3 = 9, and 4*5 = 20. so 9/20

Yuliya22 [10]3 years ago
4 0

Answer:

9/20

Step-by-step explanation:

3x3= 9 and 5x4=20

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Jon ran around a track that was 1/8 of a mile long. He ran around the track 24 times. How many miles did Jon run.
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Answer: 3 miles

Step-by-step explanation:

24 divided by 8 is 3

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3 years ago
The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.
Ulleksa [173]

Answer:

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

Step-by-step explanation:

We are given the following information in the question:

The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.2 minutes.

The distribution function can be written as:

f(x) = \lambda e^{-\lambda x}\\\text{where lambda is the parameter}\\\\\text{Mean} = \mu = \displaystyle\frac{1}{\lambda}\\\\\Rightarrow 1.2 = \frac{1}{\lambda}\\\\\lambda = 0.84 \\f(x) = 0.84 e^{0.84 x}

The probability for exponential distribution is given as:

P( x \leq a) = 1 - e^{\frac{-a}{\mu}}\\\\P(a \leq x \leq b) = e^{\frac{-a}{\mu} -\frac{-b}{\mu}}

a) P( time between the next two calls will be 54 seconds or​ less)

P( x \leq 0.9)\\= 1 - e^{\frac{\frac{-54}{60}}{1.2}} = 0.52763

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

b) P(time between the next two calls will be greater than 118.5 ​seconds)

p( x > \frac{118.5}{60}) = P(x > 1.975)\\\\ = 1 - P(x \leq 1.975) \\\\= 1 -1+ e^{\frac{-1.975}{1.2}}\\\\= 0.19285

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

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3 years ago
Answer the question below to be featured in a Mr. Beast video!
UkoKoshka [18]

Answer:

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Step-by-step explanation:

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Daniel [21]

Answer:

Terms are the things that are separated by a (+) or a (-).

Step-by-step explanation:

<u>16x^3</u> - <u>4x^2</u> -4x+1

I don't think I'm right...

7 0
2 years ago
Find JMK, JKH, HLK, HJL, LHK, JLK
nordsb [41]

Answer:

126

Step-by-step explanation:

A line is 180 degrees. I found the degree of the angles in-between 126 and M by subtracting 126 from 180. This means that M is also 126. (Plus the intersecting lines are parallel)

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