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Volgvan
3 years ago
8

in a batch of 280 water purifiers, 12 were found to be defective. what is the probability that a water purifier chosen at random

will be defective? write the probability as a percent
Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0
Batch size = 280 purifiers
Defectives = 12 purifiers

Then,
P(defective) = defectives/batch size = 12/280 =3/70

As a percentage:
P(defective) = (3/70)*100 = 4.29%
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Step-by-step explanation:

Let's solve your inequality step-by-step.

|2x+5|>0.5

Solve Absolute Value.

|2x+5|>0.5

We know either2x+5>0.5or2x+5<−0.5

2x+5>0.5(Possibility 1)

2x+5−5>0.5−5(Subtract 5 from both sides)

2x>−4.5

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What is the simplified form of the following expression? 2 startroot 18 endroot 3 startroot 2 endroot startroot 162 endroot
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The simplified form of the provided expression of 2 startroot 18 endroot +3 startroot 2 endroot startroot +162 endroot is 18√2.

<h3>What is the simplified form of an equation?</h3>

The simplified form of an equation is the simplest way of expressing the equation, by applying the required operations of mathematics.

The equation provided in the problem is,

2\sqrt{18}+3\sqrt{2}+\sqrt{162}

Let the simplified form of the above expression is <em>n. </em>Thus,

n=2\sqrt{18}+3\sqrt{2}+\sqrt{162}

Rewrite the equation to solve it further as,

n=2\sqrt{3\times3\times2}+3\sqrt{2}+\sqrt{9\times9\times2}\\n=2\sqrt{3^2\times2}+3\sqrt{2}+\sqrt{9^2\times2}

The square of the term cancel out the square root of it. Thus,

n=2\times3\sqrt{2}+3\sqrt{2}+9\sqrt{2}\\n=6\sqrt{2}+3\sqrt{2}+9\sqrt{2}\\n=(6+3+9)\sqrt{2}\\n=18\sqrt{2}

Thus, the simplified form of the provided expression of 2 startroot 18 endroot +3 startroot 2 endroot startroot +162 endroot is 18√2.

Learn more about the simplified form here;

brainly.com/question/1597694

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