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Anna007 [38]
2 years ago
5

What is the distance between point A(−1, 3) and point B(−8, 3) ?

Mathematics
1 answer:
fomenos2 years ago
4 0
7
root [(-8+1)^2 + (3-3)^2]


Mark brainliest please
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A boat traveled 150 miles downstream (with the current) and back (against the current). The trip downstream took 10 hours. The t
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Answer:

b= 10 miles/hr and c= 5 miles/hr

Step-by-step explanation:

Let it's downstream and upstream speed be d and u respectively

also speed of the boat be b and speed of stream be c.

as per question d = 150/10= 15 miles/hr

and, u= 150/30= 5 miles/hr

also we know d= b+c = 15.....i and u = b-c= 5....ii

solving i and ii we get b= 10 miles/hr and c= 5 miles/hr

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Mark walked 1212 miles in 5 hours. How many miles did Mark walk in 1 hour?
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Answer:

Step-by-step explanation:

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3 years ago
Look at the image. ( Ill give brainliest to best answer.)
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3 years ago
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

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2 years ago
If the x-values increase as the y-values decrease on a line graph, the slope of the line is
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