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emmasim [6.3K]
3 years ago
13

What is the probability of pulling out a red marble then a blue marble?

Mathematics
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

Step-by-step explanation:

Total marble = 8+5+4 = 19

n(Y) = 8, n(B) = 4 and n(R) = 5

Prob(R) = 5/17

Prob(B) = 4/16 {one marble is pulled out already}

Prob(R and B) = 5/17 × 4/16

= 5/17 × 1/4

= 5/68

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<h3>Answer:   Choice A.   (7,4)</h3>

============================================

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Next, go through each answer choice to see if the x coordinate of the point leads to the y coordinate.

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If we tried x = -5, then,

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Refer to the graph below. It visually confirms that of the four answer choices, only point A is on the line. I used GeoGebra to make the graph.

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