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sukhopar [10]
2 years ago
13

HELP ASAP

Mathematics
1 answer:
krek1111 [17]2 years ago
8 0

Answer:

This statement is false. If a sequence of rigid motions maps a pre-image to an image, the pre-image and the image are congruent no matter the details of the sequence of rigid motions.

Step-by-step explanation:

A sequence of rigid motions that maps a pre-image to a congruent image can contain fewer than two unique rigid motions.

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A grab bag contains 12 packages worth $.70 each, 15 packages $.40 cents each, and 25 packages worth $.30 each. what is the expec
Salsk061 [2.6K]

The expected value of the discrete distribution, if you have to pay $.50 to pick one package at random, is of -$0.08.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

For this problem, considering the cost of $0.5, the distribution is given as follows:

  • P(X = 0.2) = 12/(12 + 15 + 23) = 12/50 = 0.24.
  • P(X = -0.1) = 15/(12 + 15 + 23) = 15/50 = 0.3.
  • P(X = -0.2) = 23/(12 + 15 + 23) = 23/50 = 0.46.

Hence the expected value is given by:

E(X) = 0.2 x 0.24 - 0.3 x 0.1 - 0.2 x 0.46 = -$0.08.

More can be learned about the expected value of a discrete distribution at brainly.com/question/13008984

#SPJ1

8 0
1 year ago
if you are in school for 178 days for 6 hours and 40 minutes how many hours and minutes would you be in school over all​
GREYUIT [131]

Answer:

1139.2 hours

Step-by-step explanation:

6.40 x 178 = 1139.2

4 0
2 years ago
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DIRECT VARIATION
aivan3 [116]
Y\alphax
y=kx
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Don't do for points.<br><br> Don't get your account banned.<br><br> Don't be me
elena-14-01-66 [18.8K]
The last option 9,000
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Also can I plz get brainiest?

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3 years ago
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