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slavikrds [6]
3 years ago
13

A quality control manager at a factory selects 7 light bulbs at random for inspection out of every

Mathematics
1 answer:
shutvik [7]3 years ago
6 0

Answer:

350 lightbulbs

Step-by-step explanation:

First find the number of batches made.

20,000 divided by 400 = 50

This means that there are 50 batches in which 7 light bulbs will be selected at random to be inspected.

We can multiply the number of batches to the lightbulbs being inspected.

50 times 7 = 350

Therefore, 350 lightbulbs will be inspected.

Please tell me if I am incorrect :)

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Artemon [7]

Answer:

1.) 1  1/14

2.) 1/5

3.) 1/15

4.) 1

(They are all simplified)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
One solution of x^2-25=0 is 5 what is the other solution
zepelin [54]

Add 25 to both sides:


x^2 = 25


Square root both sides.


When you square root a perfect square, you will get a plus/minus result:


\sqrt{25} = \pm 5


x = \pm 5

\boxed{x = -5} \land \boxed{x = 5}


The other solution to this answer is x = -5.

5 0
3 years ago
What are fractions that are greater than 4 1/3 but less than 5 2/3
tamaranim1 [39]
5 1/4? Im not sure what the question is asking but whatever
3 0
3 years ago
Write 94% as a fraction in simplest form
lana [24]
9.4/10 is the simplest form
8 0
3 years ago
Read 2 more answers
The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.
garik1379 [7]

Answer:

The probability that X is less than 32 minutes is 0.736.

Step-by-step explanation:

Given : The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 24 minutes.

To find : What is the probability that X is less than 32 minutes?

Solution :

If X has an average value of 24 minutes.

i.e. \lambda=24

The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.

The exponentially function is \frac{1}{\lambda}e^{-\frac{x}{\lambda}}

The function form according to question is

f(x)=\{\frac{1}{24}e^{-\frac{x}{24}}, x>0\}

The probability that X is less than 32 minutes is

P[x

P[x

P[x

Therefore, the probability that X is less than 32 minutes is 0.736.

7 0
3 years ago
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