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Paladinen [302]
3 years ago
6

A 14 ft tall tent standing next to a cardboard box casts a 40 ft shadow. If the cardboard box casts a

Mathematics
1 answer:
TEA [102]3 years ago
3 0

Answer:

24.5 ft.

Step-by-step explanation:

40 divided by 2 is 20.  

14 divided by 2 is 7.

20 times 3 is 60

7 times 3 is 21 ft.

Since you're trying to get to 70ft long just add 10 instead of 20.

That mans you are only adding 3.5 to 21.

My answer should be right but my work is pretty bad lol.

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A researcher surveyed 150 high school students and found that 68% played a musical insturment. What would be a reasonable range
maria [59]

Answer:

The reasonable range for the population mean is (61%, 75%).

Step-by-step explanation:

The interval estimate of a population parameter is an interval of values that consist of the values within which the true value of the parameter lies with a certain probability.

The mean of the sampling distribution of sample proportion is, \hat p.

One of the best interval estimate of population proportion is the 95% confidence interval for proportion,

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

Given:

n = 150

\hat p = 0.68

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the 95% confidence interval for proportion as follows:

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

     =0.68\pm1.96\sqrt{\frac{0.68(1-0.68)}{150}}\\\\=0.68\pm 0.0747\\\\=(0.6053, 0.7547)\\\\\approx (0.61, 0.75)

Thus, the reasonable range for the population mean is (61%, 75%).

5 0
3 years ago
PLEASE HELP ME ASAP NEED IN FIVE MIN. PLEASE NO LINKS OR FILES. I WILL MARK BRIANYLEST AND I AM GIVEING 10 EXTRA PIONTS AS WELL.
grigory [225]

Answer:

Mode :))))))))))))))))))))

Step-by-step explanation:

7 0
2 years ago
Helpppppppppppp ppppp:/
jeka94

Answer:

18

Step-by-step explanation:

I hope this helps

3 0
3 years ago
Does anyone know the answer?
Alexxandr [17]

Hello from MrBillDoesMath!

Answer:

88

Discussion:

Angle Q is an inscribed angle so

    measure angle Q = 44  =

                      (1/2) measure of intercepted arc.

In other words,

44 = 1/2 mST               =>   multiply both sides by 2

m ST = 44*2 = 88

which is the second choice

Thank you,

MrB

5 0
3 years ago
What is the area of sector ACB? Leave your answer in terms of pi.​
andre [41]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
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