3 years ago

What is the height of the flagpole?

1 answer:

pochemuha3 years ago

7 0

Each flagpole has a different height, but the general height of one is 24 feet (i think??)

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charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

4 0

4 years ago

alina1380 [7]

450/500 how much you have to how much it costs
this equals to 90 % of the complete cost

100%-90%=10%

you need a 10 % discount

hope this helps

5 0

4 years ago

cluponka [151]

Answer:

$6250

Step-by-step explanation:

6250x.075x8=3750

6250+3750=10,000

7 0

3 years ago

Alex73 [517]

Answer:

Step-by-step explanation:

X^2=-y^2+10y+5

4 0

3 years ago

OLga [1]

10
because you would do 35 divided by 7 which is 5.
5 x 2 is 10

8 0

3 years ago