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ira [324]
3 years ago
5

A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed.

How many students are younger than 16.2 years? Express answer to the nearest student.
Mathematics
1 answer:
Tom [10]3 years ago
7 0
16.2-15.8/0.6=0.6667. Use normalcdf() to find the percentage from -999 to 0.6777 which is 0.7476*625=467
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A truck can be rented from Company A for ​$70 a day plus ​$0.20 per mile. Company B charges ​$20 a day plus ​$0.40 per mile to r
Otrada [13]

Answer:

For Company A to have a better deal, the truck must be driven more than 250 miles per day.

Step-by-step explanation:

Given that:

Rent per day of company A = $70

Per mile charges = $0.20

Let,

x be the number of miles.

A(x) = 0.20x + 70

Rent per day of company B = $20

Per mile charges = $0.40

B(x) = 0.40x + 20

For make Company A better deal,

A(x) > B(x)

0.20x+70 > 0.40+20

0.20x-0.40x>20-70

-0.20x>-50

Dividing both sides by -0.20

\frac{-0.20x}{-0.20}>\frac{-50}{-0.20}\\x>250

Hence,

For Company A to have a better deal, the truck must be driven more than 250 miles per day.

8 0
3 years ago
Write the equation of a line with a slope of -2 and a y-intercept of 5:
saveliy_v [14]
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Explanation: y = mx+b m represents the slope, b represents the y intercept
6 0
3 years ago
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What are the odds u multiply incorrect numbers and get it right
zheka24 [161]

Answer:

Very little.

Step-by-step explanation:

If you have 1x1=1, and change a number, there is no way that you will get the answer right to be 1.

4 0
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Find the measure for angle f<br><br> 46<br> 34<br> 122<br> 58
xxMikexx [17]

Answer:

\angle f = 122\degree

Step-by-step explanation:

\angle d = 58\degree (vertical angles)

\angle f+\angle d= 180\degree

(Interior angles on the same side of transversal)

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\angle f = 180\degree-58\degree

\huge \orange {\boxed {\angle f = 122\degree}}

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2 years ago
Les gusta mi dibujo soy nueva
maksim [4K]

Answer:

Si, es muy bueno!

Step-by-step explanation:

4 0
1 year ago
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