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ella [17]
4 years ago
6

a manufacturer inspects 800 personal video players and finds that 798 of them have no defects. what is the experimental probabil

ity that a video player chosen at random has no defects? express your answer as a percent.
Mathematics
1 answer:
Nata [24]4 years ago
8 0

Given:\\Number \; of \; Video \; Players \; with \; no \; de\dot{f}ect=798\\Total \; Number \; of \; video \; Players = 800Let \; A \; be \; an \; Event \; that \; a \; video \; player \; chosen \\\; at \; random \; has \; no \; de\dot{f}ect\\P(A) \; be \; the \; experimental \; probability\\ of \; event \; A \; to \; happen.\\\\The \; formula \; is \; below:\\P(A) \; = \;  \frac{Number \; of \; video \; players \; with \; no \; de\dot{f}ects }{Total \; number \; of \; video \; players}\\\\P(A)=798 \div 800 =0.9975=99.75 \%

You might be interested in
List the next four multiples of fraction 7/12
Sidana [21]
<h2>Hello!</h2>

The answer is:

\frac{14}{12}=\frac{7}{12}*2\\\\\\\frac{21}{12}=\frac{7}{12}*3\\\\\\\\\frac{28}{12}=\frac{7}{12}*4\\\\\\\\\frac{35}{12}=\frac{7}{12}*5

<h2>Why?</h2>

A multiple of a number is the repeated sum of itself, for example:

Multiple of the number 1 are: 1, 2, 3, 4, 5 and so...

Multiple of the number 3 are: 3, 6, 9, 12, 15 and so...

From the example we have:

Multiple of the number 3 are: Itself, (3+3), (3+3+3), (3+3+3+3), (3+3+3+3+3) and so...

So,

Multiple of \frac{7}{12} are:

\frac{14}{12}=\frac{7}{12}*2=\frac{7}{12}+\frac{7}{12}\\\\\\\frac{21}{12}=\frac{7}{12}*3=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}\\\\\\\\\frac{28}{12}=\frac{7}{12}*4=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}\\\\\\\\\frac{35}{12}=\frac{7}{12}*5=\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}+\frac{7}{12}

Have a nice day!

6 0
4 years ago
Ted practices two types of swimming styles for a total of 50 minutes every day. he spends 20 minutes more practicing the breast
cluponka [151]

Answer:

see below

Step-by-step explanation:

butterfly = x minutes

breast = y minutes

total is 50 minutes

breast stroke = butterfly +20

Part A

x+y = 50

y = x+20

Part B

Substitute the second equation into the first

x+ (x+20) = 50

2x+20 = 50

2x+20-20 = 50-20

2x = 30

2x/2 = 30/2

x = 15

y = x+20

y = 20+15

y = 35 minutes

35 minutes on the breast stroke

Part C

45 minutes on the butterfly is not reasonable

We only have a total of 50 minutes

50-45 = 5

But he spend more time on the breast stroke ( 20 minutes more), but if he spend 45 minutes on the butterfly, he would have to spend less on the breast stroke.

4 0
3 years ago
Please show me how u got theses Answer
musickatia [10]

Answer:

7 x 7 x 7= 49 x 7= 343

3 x 3 x 3 x 3= 9 x 3 x 3= 27 x 3= 81

3 0
3 years ago
Evaluate the exponential expression (−2)6. Question 6 options: −12 12 −64 64
OlgaM077 [116]

Answer:

64

Step-by-step explanation:

(-2) ^6

This is -2 multiplied by itself 6 times

-2 * -2 *-2 * -2* -2 *-2

64

7 0
4 years ago
What is the equation for this table ?
KengaRu [80]

Answer:

y=-2x+5

Step-by-step explanation:

That is the equation ^

7 0
3 years ago
Read 2 more answers
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