richtercatrina16
11.10.2019 •
Mathematics
Keshia selects 1 marble, looks at it first, puts it back, and then selects another. find the probability of keshia first picking a yellow marble and then an orange marble
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Ответ:
correct answer is 2800.
Step-by-step explanation:
You take the area of the square which is 20x20 = 400.
There is 5 squares 400x5 = 2000
There is 4 triangles--which is 1/2 the area of 1 square (In this case).
One triangle = 200
200x4 = 800
2000 + 800 = 2800