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Fed [463]
3 years ago
12

What's the probability of obtaining a 3 digit number at random which is DIVISIBLE by 7 ​

Mathematics
1 answer:
pochemuha3 years ago
6 0

Answer:

  32/225 ≈ 0.1422

Step-by-step explanation:

If you consider "3-digit" numbers to be between 100 and 999, inclusive, there are 128 such numbers divisible by 7. The probability of choosing one at random is ...

  128/900 = 32/225 = 0.1422...(repeating)

__

If you consider all non-negative integers less than 1000 to be "3-digit numbers," then the probability is ...

  142/1000 = 0.142 (exactly)

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Which of the following r-values represents the strongest correlation?
lbvjy [14]

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Answer:

-0.71

Step-by-step explanation:

I hope this helps.

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3 years ago
Four percent of the welds on an automobile assembly line are defective. The defective welds are found using an X-ray machine. Th
Helga [31]

Answer:

a ) See Annex

b) P₁  =  0,0464       or    P₁  =  4,64 %

c) P₄  = 0,92   or   P₄  = 92 %

Step-by-step explanation:

b) P₁ [ X being defective ]  =  P₂   +   P₃

Where P₂  is the probability of X rays machine detects a weld defective and the weld is really defective

And  P₃  is the probability of X rays machine detects a weld defective and the weld is not defective

Then

P₂  =  0,04 *  0,92  =  0,0368

P₃  =  0,96 * 0,01  = 0,0096

Then  P₁  =  0,0368  +  0,0096

P₁  =  0,0464       or    P₁  =  4,64 %

c) P₄ = 0,04 *0,92

P₄  = 0,92   or   P₄  = 92 %

7 0
3 years ago
What are the values of a1 and r of the geometric series?
igor_vitrenko [27]
A1 or just a as it is in the equations is just the initial term of the sequence.  In this case a1=1

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5 0
3 years ago
Read 2 more answers
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mezya [45]

Answer:

3.5 in

Step-by-step explanation:

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7/2  = radius

3.2 in = radius

4 0
3 years ago
Read 2 more answers
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