Answer: 0.20833
Step-by-step explanation:
This is a case of inverse probability.
We first determine the probability that an item is defective generally.
To do this we sum the possible options of having the item produced from the first machine and is defective or having the item produced by the second machine and is defective or having the item produced by the third machine and is defective.
Mathematically,this becomes :
(0.2 * 0.05) + (0.3 * 0.03) + (0.5 * 0.01)
0.01 + 0.009 + 0.005 = 0.024.
Probability an item is defective in general = 0.024
Probability a third machine produces a defective item = 0.5 * 0.01 = 0.005.
Hence, given that the item is defective, the probability that it was produced by the third machine becomes:
= (probability of the item being produced from the third machine and is defective) / (probability of the item being defective in general)
= 0.005/0.024
= 0.20833.
Answer: We need how much he spent on the whole thing
Step-by-step explanation:
It isn't really specific because he could of bought 6 pencils and 9 markers for all we know so we need the total how much he spent on all 15 markers and pencils
The error percentage is 4.13%.
<h2>Error percentage</h2>
The amount of mistakes is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
Given
Annie estimates that the height of a bookcase is 78.25 in.
The actual height is 75.50 in.
<h3>To find </h3>
The error percentage.
<h3>How to find the error percentage?</h3>
We know the formula for the error percentage.
The error percentage is 4.13%.
More about the error link is given below.
brainly.com/question/13286220
The cost of the printer is $309 and cost of the computer is $618.
Step-by-step explanation:
Let x denote the cost of computer
Let y denote the cost of printer
Total cost of printer and computer OR
x + y = $927
<u>To find the cost of x and y,</u>
Cost of computer = 2 x cost of the planet
x = 2y
x+y = 927
2y+y = 927
3y = 927
y = 309
x = 2y
x = 2(309)
x = 618
Therefore, the cost of the printer is $309 and cost of the computer is $618.
Keyword: Cost, Algebra
Learn more about cost at
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Ahh i hope im in time to help!
The answer is C, 46
Hope this helped pls mark be brainliest!!!