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Likurg_2 [28]
3 years ago
14

3x+4y= 12 and 2x-y=8

Mathematics
1 answer:
Anettt [7]3 years ago
4 0

i dont no sorry :(

..................

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A manufacturing company regularly conducts quality control checks at specified periods on the products it manufactures. Historic
Rina8888 [55]

Answer:

The probability that none of the LED light bulbs are​ defective is 0.7374.

Step-by-step explanation:

The complete question is:

What is the probability that none of the LED light bulbs are​ defective?

Solution:

Let the random variable <em>X</em> represent the number of defective LED light bulbs.

The probability of a LED light bulb being defective is, P (X) = <em>p</em> = 0.03.

A random sample of <em>n</em> = 10 LED light bulbs is selected.

The event of a specific LED light bulb being defective is independent of the other bulbs.

The random variable <em>X</em> thus follows a Binomial distribution with parameters <em>n</em> = 10 and <em>p</em> = 0.03.

The probability mass function of <em>X</em> is:

P(X=x)={10\choose x}(0.03)^{x}(1-0.03)^{10-x};\ x=0,1,2,3...

Compute the probability that none of the LED light bulbs are​ defective as follows:

P(X=0)={10\choose 0}(0.03)^{0}(1-0.03)^{10-0}

                =1\times 1\times 0.737424\\=0.737424\\\approx 0.7374

Thus, the probability that none of the LED light bulbs are​ defective is 0.7374.

6 0
3 years ago
Jenny bought a $50 jacket. If the sales tax rate is 8%, how much tax did she pay?
OlgaM077 [116]

Answer:

54$

Step-by-step explanation:

  • To get the tax times the number to the percentage
  • 50 * 8% = 4
  • 50 + 4 = 54 $
8 0
2 years ago
Can someone please answer this ‍♀️
Marianna [84]
A) JL and JK

Because you must always start from top to bottom and left to right.
7 0
3 years ago
the radius and height of a right circular cone are in the ratio of 5:12 and its volume is 107800 cube cm find its height​
zubka84 [21]

Answer:

this is the answer what i found

3 0
3 years ago
250 tickets were sold for a school play. Students tickets cost $8 and adult tickets cost $10. If $2200 was collected in ticket s
Kamila [148]

Answer:the answer is 220

Step-by-step explanation:2200 divided by 10

7 0
3 years ago
Read 2 more answers
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