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Fiesta28 [93]
2 years ago
10

A stack of 30 science flashcards includes a review card for each of the following: 10 insects, 8 trees, 8 flowers, and 4 birds.

Mathematics
1 answer:
Gnom [1K]2 years ago
6 0

The probability of randomly selecting a tree or a flower is 8/15.

<h3>What is the probability?</h3>

Probability determines the chances that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The probability of randomly selecting a tree or a flower = (number of trees / total number of flash cards) + (number of flowers / total number of flash cards)

8/30 + 8/30 = 16/30  = 8/15

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

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Answer:

Part 1) The vertex is the point (0.50,2.50)

part 2) y=-58

Step-by-step explanation:

we have

y=-2x^{2} +2x+2

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Group terms that contain the same variable, and move the constant to the opposite side of the equation

y-2=-2x^{2} +2x

Factor the leading coefficient

y-2=-2(x^{2} -x)

Complete the square. Remember to balance the equation by adding the same constants to each side

y-2-0.50=-2(x^{2} -x+0.25)

y-2.50=-2(x^{2} -x+0.25)

y-2.50=-2(x-0.50)^{2}

y=-2(x-0.50)^{2}+2.50 -----> equation in vertex form

The vertex is the point (0.50,2.50)

Part 2) Find the value of y for x=6

substitute the value of x in the equation

y=-2(6)^{2} +2(6)+2

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