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3 years ago

tim can run three miles in 20 minutes if he maintain his speed how long will it take him to run 9 miles

Mathematics

1 answer:

Arlecino [84]3 years ago

5 0

Answer:

60 minutes or 1 hour

Step-by-step explanation:

My picture is my worked out solution :)

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Suppose that the hourly wages of fast food workers are normally distributed with an unknown mean and standard deviation. The wag

Nutka1998 [239]

Answer: 1.303639

Step-by-step explanation:

The t-score for a level of confidence $(1-\alpha)$ is given by :_

$t_{(df,\alpha/2)}$ , where df is the degree of freedom and $\alpha$ is the significance level.

Given : Level of significance : $1-\alpha:0.80$

Then , significance level : $\alpha: 1-0.80=0.20$

Sample size : $n=40$

Then , the degree of freedom for t-distribution: $df=n-1=40-1=39$

Using the normal t-distribution table, we have

$t_{(df,\alpha/2)}=t_{39,0.10}=1.303639$

Thus, the t-score should be used to find the 80% confidence interval for the population mean =1.303639

8 0

2 years ago

15 + 10y - 4xy - 6 6.

Verdich [7]

Answer:

Step-by-step explanation:

15+10y−4xy−66

Soustraire 66 de 15 pour obtenir −51.

−51+10y−4xy

4 0

2 years ago

Read 2 more answers

Need help with this as soon as possible.

maw [93]

Answer:

after 9 weeks it would become 9*1+10=19 inches

and after w weeks it will be w*1+10 inches tall

hope this helps

Step-by-step explanation:

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2 years ago

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The table lists the values for two parameters, x and y, of an experiment. What is the estimated value of x for y = 0.049?

Scilla [17]

Right answer is 20.4

4 0

3 years ago

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A plane requires 3300 gallons of fuel and 75 minutes to make a round trip to Prague, and it takes 5700 gallons

Snowcat [4.5K]

Answer:

Step-by-step explanation:

3300P + 5700S > = 94500 (thats greater then or equal to)

this one is based on the fuel

75P + 130S > = 2400 (thats greater then or equal to)

this one is based on the minutes

6 0

3 years ago