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ella [17]
3 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]3 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 \%

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Elis [28]
I hope this helps you out. It is very tedious

6 0
3 years ago
85% of all cars sold in chicago are some color other than black. if three hundred black cars were sold in chicago, how many cars
hram777 [196]
Of 85% of cars sold where not black then 100-85% where black = 15%
let the number of cars sold be y
then 15%*y=300
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7 0
3 years ago
On a coordinate plane, 2 straight lines are shown. The first solid line has a positive slope and goes through (0, negative 2) an
ExtremeBDS [4]

Answer:

y\geq x-2

x+2y

Step-by-step explanation:

step 1

<em>Find the equation of the first inequality</em>

Find the equation of the first solid line

we have the ordered pairs

(0,-2) and (2,0)

<u><em>Find the slope</em></u>

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute the values

m=\frac{0+2}{2-0}

m=\frac{2}{2}

m=1

The equation in slope intercept form is equal to

y=mx+b

we have

m=1

b=-2 ---> the y-intercept is given

substitute

y=x-2

Remember that

Everything to the left of the solid line is shaded

so

The inequality is

y\geq x-2

step 2

<em>Find the equation of the second inequality</em>

Find the equation of the second dashed line

we have the ordered pairs

(0,2) and (4,0)

<u><em>Find the slope</em></u>

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute the values

m=\frac{0-2}{4-0}

m=\frac{-2}{4}

m=-\frac{1}{2}

The equation in slope intercept form is equal to

y=mx+b

we have

m=-\frac{1}{2}

b=2 ---> the y-intercept is given

substitute

y=-\frac{1}{2}x+2

Remember that

Everything below and to the left of the line is shaded

so

The inequality is

y

Rewrite

Multiply by 2 both sides

2y

x+2y

therefore

The system of inequalities is

y\geq x-2

x+2y

see the attached figure to better understand the problem

5 0
3 years ago
Read 2 more answers
Which decimal is equivalent to 13 over 9
DaniilM [7]

i believe 1.44444444444

5 0
3 years ago
Read 2 more answers
Tamika makes a 5.5% commision selling electronics how much commission doesshe make if she sells a flat screen for 10000
sergey [27]

Answer:

$550

Step-by-step explanation:

5.5 % = 0.055

10,000 x 0.055=550

6 0
3 years ago
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