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3 years ago

Please help!!!!!!!!!!!!

Mathematics

1 answer:

Airida [17]3 years ago

5 0

Answer:

A. P = 29.7 m

Step-by-step explanation:

6 + 8 = 14

Now for the diameter of the half circle.

Hypotenuse² = Height² + base²

6² + 8²

36 + 64 = 100

√100 = 10

C = 2πr = 2 · π · 5

≈ 31.42

31.42 ÷ 2 = 15.71

15.71 + 14

29.71

29.71 m ≈ 29.7 m

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Step-by-step explanation:

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3 years ago

From a shipment of 65 transistors, 6 of which are defective, a sample of 5 transistors is selected at random.

Vladimir79 [104]

Answer:

a) 8259888

b) 34220

c) 45057474

Step-by-step explanation:

Given,

The total number of transistor = 65,

In which, the defective transistor = 6,

So, the number of non defective transistor = 65 - 6 = 59,

Since, out of these transistor 5 are selected,

a) Thus, the number of ways = the total possible combination of 5 transistors = ${65}C_ 5$

$=\frac{65!}{(65-5)!5!}$

$=8259888$

b) The number of samples that contains exactly 3 defective transistors = the possible combination of exactly 3 defective transistors = ${6}C_3\times {59}C_2$