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lyudmila [28]
3 years ago
11

Brittany bought three movies from the library which movie is almost 3 hours long about how many hours of movies does Britney hav

e to watch
Mathematics
2 answers:
miv72 [106K]3 years ago
6 0
Brittany has to watch about 9 hours of movies. This is because to find the total amount of time she spent watching movies, you have to multiply the total movies she watched and the amount of time each movie is. 

For this problem, the total movie is 3 and the time length of each movie is 3. 

3x3 is 9

or you can add since this is a smaller number-

3+3+3 = 9

Hope this helps!
Anton [14]3 years ago
5 0
Britney has to watch 90 hours of movies
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A table has an area of 12 ft squared and a perimeter of 16 ft. What are the dimensions of the table?
Likurg_2 [28]
P=2x+2y, y=(p-2x)/2

a=xy, using y found above in this equation gives you:

a=(px-2x^2)/2  we are told a=12 and p=16 so

12=(16x-2x^2)/2

24=16x-2x^2

2x^2-16x+24=0

2x^2-12x-4x+24=0

2x(x-6)-4(x-6)=0

(2x-4)(x-6)=0

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7 0
3 years ago
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A statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20. Use thi
rjkz [21]

Answer:

\mu = 14.5\\

\sigma = 5.071\\

k = 1.084

Step-by-step explanation:

given that a  statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.

i.e. his findings with respect to probability are

P(9

Recall Chebyshev's inequality that

P(|X-\mu |\geq k\sigma )\leq {\frac {1}{k^{2}}}\\P(|X-\mu |\leq k\sigma )\geq 1-{\frac {1}{k^{2}}}\\

Comparing with the Ii equation which is appropriate here we find that

\mu =14.5

Next what we find is

k\sigma = 5.5\\1-\frac{1}{k^2} =0.15\\\frac{1}{k^2}=0.85\\k=1.084\\1.084 (\sigma) = 5.5\\\sigma = 5.071

Thus from the given information we find that

\mu = 14.5\\\sigma = 5.071\\k = 1.084

5 0
3 years ago
The angle shown is in standard position. Select the possible measures of the angle. –450° –360° –270° –90° 90° 270° 360° 450° On
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Answer:

-450

-90

270

Step-by-step explanation: Just did it on edgen-uity

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Answer:

The correct answer is D

Step-by-step explanation:

-20 is your y-intercept and your graph will be increasing

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3 years ago
Which value is MEAN of the data set?
Fynjy0 [20]

Answer:

D

Step-by-step explanation:

There is no data set so there is no data to find the mean of.

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3 years ago
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