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Furkat [3]
3 years ago
12

Alfredo has different colored spiral notebooks in his backpack. Which of the following models could be used to simulate a 1 in 3

chance of Alfredo randomly selecting a red spiral from his backpack?

Mathematics
1 answer:
BartSMP [9]3 years ago
4 0

Answer:

the fourth option

Step-by-step explanation:

Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one is attached to the event. If it doesn't a value of zero is attached to the event.

Probability of choosing a red spiral = number of red spiral / total sum of spirals in the bag

1st option = 2 / 4 = 1/2

2nd option = 4/8 = 1/2

3rd option = 2/3

4th option = 2/6 = 1/3

the fourth option is correct

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If QR=PQ , RS=PQ and QR is 2x+5 and RS is 10-3x Solve for x using the given information
AfilCa [17]

Answer:

x = 1

Step-by-step explanation:

2x + 5 = 10 - 3x

2x + 3x = 10 - 5

5x = 5

x = 1

5 0
3 years ago
A parabola has a vertex at (0,0). The focus of the parabola is located at (4,0). What is the equation of the directrix? x=−4 y=−
rewona [7]

Answer:

Step-by-step explanation:

The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.

The vertex is halfway between focus and directrix. Directrix: x = -4

7 0
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I don’t understand this question.
Anastaziya [24]
<span>In a triangle the sum of two sides is always greater than the third side.

5.6-4.0 < x < 5.6+4.0
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4 0
3 years ago
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tino4ka555 [31]
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5 0
3 years ago
What is the answer to this system of equations? 2x - 3y= 21 and -6x + 2y = 7.
allsm [11]

answer:

x = - 9/2

y = -10

Step-by-step explanation:

make both equations look like y =

2x-3y=21 -> -3y= -2x+21 -> y = (-2x+21)/-3 -> y = 2/3x - 7

-6x + 2y = 7 -> 2y = 6x + 7 -> y = 3x + 7/2

now make the equations equal to each other (since they both equal y)

get x

2/3x - 7 = 3x + 7/2

-7 -7/2 = 3x - 2/3x

-14/2 -7/2 = 9/3x - 2/3x

-21/2 = 7/3x

(3/7) -21/2 = x

x = (3/7) -21/2

x = - 63/14

x = - 9/2

put it back in an equation to get y

y = 3x + 7/2

y = 3(-9/2) + 7/2

y = -27/2 + 7/2

y = -20/2

y = - 10

brainly.com/question/12203001

5 0
2 years ago
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