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prohojiy [21]
3 years ago
12

Midpoint of (-8,7) and (-9,11)

Mathematics
2 answers:
olga55 [171]3 years ago
8 0

Answer:

(-8.5,9)

Step-by-step explanation:

((-8+(-9))/2=-8.5

(7+11)/2=9

(-8.5,9)

kari74 [83]3 years ago
4 0

Answer:

(-8.5, 9)

Step-by-step explanation:

use midpoint formula

(-8 + -9) ÷2 , (7 + 11) ÷ 2

-17 ÷ 2 , 18 ÷ 2

-8.5 , 9

so the coordinates of the midpoint are (-8.5, 9)

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The expected value of the game is $8.75.

----------------------

  • The expected value is the <u>sum of each outcome multiplied by it's probability</u>.
  • A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

  • The probability of spinning a 2 and a vowel is: \frac{1}{4} \times \frac{2}{8} = \frac{2}{32}.
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  • The probability of spinning 2 and a consonant is: \frac{1}{4} \times \frac{6}{8} = \frac{6}{32}
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  • The probability of spinning 1 and a vowel is: \frac{3}{4} \times \frac{2}{8} = \frac{6}{32}.
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  • 32 - (6 + 6 + 2) = 18, thus, \frac{18}{32} probability of earning $0.

The expected value is:

E = \frac{2}{32}(50) + \frac{6}{32}(25) + \frac{6}{32}(5) + \frac{18}{32}(0)

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E = 8.75

The expected value of this game is of $8.75.

A similar problem is given at brainly.com/question/24961584

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