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lions [1.4K]
3 years ago
14

a door frame is 80 inches tall and 36 inches wide, what is the length of diagonal of the door frame? round to the nearest 10th

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
8 0

Answer:

88 in

Step-by-step explanation:

You will need to use the Pythagorean theorem for this question which is a^2+b^2=c^. The diagonal will always be c, therefore you need to plug 80 in for a and 36 in for b. Add those together, and you should be left with 7696=c^2. Take the square root of both, and you will get your answer :)

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2 years ago
In the game of Keno, a player starts by selecting 20 numbers from the numbers 1 to 80. After the player makes his selections, 20
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The percentage of winning if 20 winning numbers are randomly selected from numbers 1 to 80 is 12.48%.

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Probability is the chance of happening an event among all the events possible.

Probability of winning is calculated as under:

Probability=C(20,3)C(60,17)/C(80,20)

We have taken C(20,3) because player will win if 5 numbers are selected from 20 winning numbers.

We have taken C(60,17) because after selection of 20 numbers 60 numbers will left from 80 and after winning from 3 numbers 17  numbers left and from total 80, 20 numbers are taken.

=C(20,3)C(60,17)/C(80,20)

=(20!/3!17!  * 60!/17!43!)/80!/20!60!

=1140*387221678682300/35353161422121743200

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Hence the probability of winning is 12.48%.

Learn more about probability at brainly.com/question/24756209

#SPJ4

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