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guajiro [1.7K]
3 years ago
13

This one is confusing

Mathematics
2 answers:
andrew-mc [135]3 years ago
5 0

Answer:

D(-1) = 2

Step-by-step explanation:

replace x with D(x), which in this case is -1

D(x) = x²-2x-1

replace x with -1

D(x) = (-1)²-2(-1)-1

Now solve using PEMDAS

Alekssandra [29.7K]3 years ago
4 0

Answer:

it s just asking for negative d

Step-by-step explanation:

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Marizza181 [45]

Answer:

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6 0
4 years ago
19. What is the probability that the student only plays football?
Nikolay [14]

Using the probability concept, we have that:

  • The probability that the student only plays football is: (c) 13 /33.
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<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

The total number of students is given by:

26 + 3 + 9 + 10 + 6 + 5 + 7 = 66

Of those, 26 play only football, hence the probability is:

p = 26/66 = 13/33

Which means that option c is correct for question 19.

Of those same 66 students, 9 + 7 = 16 play baseball but not football, hence the probability is:

p = 16/66 = 8/33

Which means that option d is correct for question 20.

More can be learned about probabilities at brainly.com/question/14398287

#SPJ1

8 0
2 years ago
Is my answer correct
Jobisdone [24]
Yes that's correct! :-)
8 0
4 years ago
Read 2 more answers
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