Four microprocessors are randomly selected from a lot of 100

Mathematics

1 answer:

ira [324]3 years ago

7 0

Answer:

Step-by-step explanation:

From the set of 100 with 10 defective microprocessors, the probability of picking a defective one is;

10/100 = 1/10

From the set of 99 remaining and 9 defective microprocessors, the probability of picking a defective one is;

9/99 = 1/11

From the set of 98 remaining and 8 defective microprocessors, the probability of picking a defective one is;

8/98 = 4/49

From the set of 97 remaining and 7 defective microprocessors, the probability of picking a defective one is;

7/97

Adding all 4 probabilities together, we get;

1/10 + 1/11 + 4/49 + 7/97 = 0.345 or 34.5%

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What Is the nth term ruld of the quadratic sequence -5,-4,-1,4,11,20,31

nordsb [41]

-5 - 4 -1 4 11 20 31 subtracting:-
1 3 5 7 9 11 subtractiing:-
2 2 2 2 2

second row is 2 so the rule will contain n^2

so we can write the series as n^2 - 6 , n^2 - 8 , n^2 - 10 etc

the numbers are in arithmetical sequence with a1 = 6 and d = -2

so nth term of our sequence is n^2 - a1 + (n - 1)d = n^2 -2n - 6 + 2

= n^2 - 2n - 4 Answer

3 0

3 years ago

Need help asap :) they said the text was too short so don't mind this

Elis [28]

Answer:

try 63

Step-by-step explanation:

14×9=126

126÷2=63

5 0

4 years ago

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