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3 years ago

Anybody know this ???

Mathematics

1 answer:

serg [7]3 years ago

6 0

Answer:

suurreeeeee let me finish and iwill give you the answer

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What type(s) of symmetry does this figure have?

umka21 [38]

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3 years ago

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Management of a particular golf course wants to know what the average score is for their course. It is known that from previous

babunello [35]

Answer: c. $70\pm (1.96)\dfrac{4.5}{\sqrt{50}}$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where n= sample size

$\overline{x}$ = sample mean.

z*= Critical value.

$\sigma$ = population standard deviation.

As per given , we have

n= 50

$\sigma=4.5$

$\overline{x}=70$

Also, we know that the critical value for 95% confidence interval : z*= 1.96

Then, the 95% confidence interval (CI) to estimate the true average score of golfers on this particular course will be :

$70\pm (1.96)\dfrac{4.5}{\sqrt{50}}$ (substitute all the value in the above formula.)

Hence, the correct option is c. $70\pm (1.96)\dfrac{4.5}{\sqrt{50}}$

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3 years ago

How large is 12 than 60

Tom [10]

12 is 5 times = 60
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3 years ago

The value of a car is inversely proportional to its age. if a car is worth $8100 when it is 6 years old, how old will it be wh

Sveta_85 [38]

It is $13.500 because you are adding

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3 years ago

Robert and Chris can skate 4 miles in 18 minutes. How far can they ride in 45 minutes?

adell [148]

Answer: Robert and Chris can skate 10 miles in 45 minutes.

Step-by-step explanation:

Let's start by finding the unit rate.

$\frac{4}{18} =\frac{2}{9} \\\frac{18}{18} =1$

Robert and Chris can skate $\frac{2}{9}$ of a mile in 1 minute. Now we can multiply both by 45 to see how far the can go in 45 minutes.

$(\frac{2}{9}) (\frac{45}{1} )\\\frac{(2)(45)}{(9)(1)} \\\frac{90}{9} \\10$

45x1=45

The can skate 10 miles in 45 minutes.

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3 years ago