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solong [7]
3 years ago
9

Plz help!!! this is due today!!

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0

Hi!!!!!!!!!!!!

Hope I help!

SO the correct answer are...............................

<h2><u>0=0! 1=4! 2=8! 3=12! 4=16! &, 5=20!!!!!!!!!!</u></h2>

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The speeds of cars on a given i street we are normally distributed with a mean of 72 miles per hour and a standard deviation of
Ostrovityanka [42]

Answer: 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

Step-by-step explanation:

Let X be a random variable that represents the speed of the drivers.

Given: population mean : M = 72 miles ,

Standard deviation: s= 3.2 miles

The probability that the drivers are traveling between 70 and 80 miles per hour based on this distribution:

P(70\leq X\leq 80)=P(\frac{70-72}{3.2}\leq \frac{X-M}{s}\leq\frac{80-72}{3.2})\\\\= P(-0.625\leq Z\leq 2.5)\ \ \ \ \ [Z=\frac{X-M}{s}]\\\\=P(Z\leq2.5)-P(Z\leq -0.625)\\\\\\ =0.9938-0.2660\ \ \ [\text{Using p-value calculator}]\\\\=0.7278

Hence, 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

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3 years ago
Show that point (pi/3,1/2) is on the curve of y=cosx
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y=cosx
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so that point is on curve y=cosx
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Substitute the values into the inequality:

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Step-by-step explanation:

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