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2 years ago

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A careless university student leaves her iClicker device behind with probability 1/4 each time she attends a class. She sets out

with her iClicker device to attend 5 different classes (each class is in a different lecture theatre). Part 1) If she arrives home without her iClicker device (after attending 5 classes), what is the probability (to 3 SIGNIFICANT figures) that she left it in the 5th class?

1 answer:

oksian1 [2.3K]2 years ago

3 0

Answer:

0.0791

Step-by-step explanation:

student forgets iClicker device with probability 1/4 each time she attends a class.

She sets out with her iClicker device to attend 5 different classes

A - forget device

A' - do not forget device

P(A) = 1/4

P(A') = 3/4

If she arrives home without her iClicker device (after attending 5 classes), what is the probability (to 3 SIGNIFICANT figures) that she left it in the 5th class?

So, she will not forget in 1st class AND not forget in 2nd class AND not forget in 3rd class AND not forget in 4th class AND will forget in 5th class, so:

1st 2nd 3rd 4th 5th

3/4 3/4 3/4 3/4 1/4 = 0.0791

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Step-by-step explanation:

The complete question is

JG bisects FJH, FJG= (2x + 4)° and GJH = (3x -9)°

What is FJH

we know that

m∠FJH=m∠FJG+m∠GJH -----> equation A

If ray JG is an angle bisector of ∠FJH

then

m∠FJG=m∠GJH -----> equation B

substitute the given values in equation B and solve for x

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substitute the value of x

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2 years ago

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Step-by-step explanation:

Given: $\frac{1}{8}-(\frac{-3}{4} )$

To find: number which represents the expression

Solution:

Integers refers to natural numbers, 0 together with negative of rational numbers.

A rational number is the number of the form $\frac{p}{q}$ where p and q are integers and $q\neq 0$ .

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Step-by-step explanation:

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Critical Value

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1 year ago

HDTV screens usually have a width-to -height ratio of 16:9. Which screen dimensions are in the same proportion?

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Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

width-to -height ratio of 16:9

Let analyse all possible answers:

4 feet by 3 feet

16 divided by 4 is the same as 9 divided by 3 => it is true

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16 divided by 28 is different as 9 divided by 21 => it is wrong

48 centimeters by 27 centimeters

16 divided by 48 is different as 9 divided by 27 => it is wrong

26 inches by 19 inches

16 divided by 26 is different as 9 divided by 219=> it is wrong

We choose A.

Hope it will find you well.

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Step-by-step explanation:

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