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olga_2 [115]
2 years ago
11

Please help me in this question

Mathematics
1 answer:
charle [14.2K]2 years ago
6 0
Number defective=4
number of non-defective=total-defective
=20-4
=16
the questions asked for 1 defective
so we choose only 1 defective from 4 defective items
4C1

and for 1 non-defective
we choose only 1 non-defective from 16 non-defective items
16C1

we choose 2 items from 20 items
so 20C2

answer:
probability= [(4C1) * (16C1)] /(20C2)
=32/95

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jolli1 [7]

Answer:

  d.  6

Step-by-step explanation:

The product of lengths to the near and far intersection points is the same for both secants:

  PB×PA = PD×PC

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5 0
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jeka94

Answer:

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
An apple farmer has planted 0.3 of his orchard with cherry trees. The orchard is 8.59 acres in size. How many acres are planted
Lynna [10]
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6 0
3 years ago
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IgorC [24]

Answer:

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D =  19.97

Step-by-step explanation:

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B = -2.2 + 0.5 = -1.7

C = -1.1(-1.7) = 1.87

D = 18.1 + 1.87 = 19.97

3 0
2 years ago
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