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SCORPION-xisa [38]
3 years ago
8

in a box of 12 fuses, there are 3 that are defective. if a quality control engineer tests 4 of these fuses at random, what is th

e probability that he does not find any of the defective fuses?
Mathematics
1 answer:
vladimir1956 [14]3 years ago
6 0
3/12, or 1/4, are defective.
he tests 4/12, or 1/3, fuses.
1/4(1/3) = 1/12 ?

i’m sorry if this is wrong. i’m not good at probability!
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Answer:

a) $654

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Step-by-step explanation:

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Una docena = 12

Por eso:

12 bolígrafos = $ 7848

1 bolígrafo = $ x

Cruz multiplicar

12 bolígrafos × $ x = 1 bolígrafo × $ 7848

$ x = 1 bolígrafo × $ 7848/12

$ x = $654

b) Área de un triángulo ¿9 unidades de base y 6 unidades de altura?

Área de un triángulo =

= 1/2 × Base × Altura

1/2 × 9 × 6

= 27 unidades cuadradas

c) Cien veces la suma de 4.5 con 2.71

Esto se calcula como:

100 × (4,5 + 2,71)

= 100 × (7.21)

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3 years ago
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Answer:

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2 years ago
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Answer:

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Step-by-step explanation:

See attached for explanation.  I converted watt*hr to kW*hr by dividing by 1000.

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Marina86 [1]

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Step-by-step explanation:

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3 years ago
Which expression is equavilent to 6(3x+4) please help Asap​
Tems11 [23]

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Step-by-step explanation:

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2 years ago
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