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Brrunno [24]
3 years ago
5

Please respond with the format showed on the picture so use . after the letter and display the answer.

Mathematics
1 answer:
PolarNik [594]3 years ago
8 0

Answer:

c

Step-by-step explanation:

(24 - 15) x 4 - 3 x 2

9 x 4 - 3 x 2

36 - 6

30

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The average annual snowfall in king Salmon, Alaska, is 45.9 inches. The snow season lasts about 7 months of the year. About how
Elina [12.6K]
Hello i am new here how are you doing
5 0
3 years ago
What are the 10th and 90th percentiles of the distribution of sample proportion for the population proportion below?
levacccp [35]

Answer:

The 10th percentile is 0.0784.

The 90th percentile is 0.1616.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

For a proportion p in a sample of size n, we have that \mu = p, \sigma = \sqrt{\frac{p(1-p)}{n}}

In this problem, we have that:

\mu = 0.12, \sigma = \sqrt{\frac{0.12*0.88}{100}} = 0.0325

10th percentile:

X when Z has a pvalue of 0.1. So X when Z = -1.28.

Z = \frac{X - \mu}{\sigma}

-1.28 = \frac{X - 0.12}{0.0325}

X - 0.12 = -1.28*0.0325

X = 0.0784

The 10th percentile is 0.0784.

90th percentile:

X when Z has a pvalue of 0.9. So X when Z = 1.28.

Z = \frac{X - \mu}{\sigma}

1.28 = \frac{X - 0.12}{0.0325}

X - 0.12 = 1.28*0.0325

X = 0.1616

The 90th percentile is 0.1616.

4 0
3 years ago
A circle with radius of 3 cm sits inside a circle with radius of 5 cm. What is the area of the shaded region? Round your final a
DiKsa [7]

Hello!!

So first you need to find the area of the green circle. The formula for finding area for a circle is A = π r2. So the area for the green circle is 28.26 cm. Then you need to find the area of the blue circle. (Using the same formula) which would be 78.5. Then you subtract the value of the green circle to get the value of the shaded region which then your final answer is 50.24 cm. Hope this helped!!

8 0
3 years ago
Read 2 more answers
The area of a circle is 2464cm2.calculate it's diameter to 2 significant figures<br>​
tigry1 [53]

Answer:

hi

Step-by-step explanation:

Answer:

The diameter of the circle is 56 cm.          

Step-by-step explanation:

Given : The area of the circle is 2464 cm square.

To find : The diameter of the circle?

Solution :

The area of the circle is defined as

Where, A=2464 cm² is the area,

r is the radius

Substituting the values,

Radius of the circle is 28 cm.

The diameter of the circle is  

Therefore, The diameter of the circle is 56 cm.

3 0
3 years ago
Larry plans to paint 2 walls in his room. The ceiling is 8 ft above the floor. One of the walls is 13 ft wide and the other is 1
castortr0y [4]
10x8=80ft + 13x8=184
6 0
3 years ago
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