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iren2701 [21]
2 years ago
8

The chart gives the income distribution of Sambala, an island nation in the arctic ocean. Annual income Ken $35000 Leo $46000 Mi

chael $68000 Marion $300000 Joseph $57000 Ellen $41000 Tom $66000 What is the mean income in Sambala
Mathematics
1 answer:
blsea [12.9K]2 years ago
6 0

Using it's concept, it is found that the mean income in Sambala is of $87,571.43.

The mean of a data-set is the <u>sum of all observations in the data-set divided by the number of observations.</u>

In this problem, there are 7 observations: 35000, 46000, 68000, 300000, 57000, 41000 and 66000.

Hence, the <em>mean </em>is:

M = \frac{35000 + 46000 + 68000 + 300000 + 57000 + 41000 + 66000}{7} = 87571.43

The mean income in Sambala is of $87,571.43.

A similar problem is given at brainly.com/question/13451786

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A movie theater has a seating capacity of 315. The theater charges $5 for children, $7 for students, and $12 of adults. There ar
xxTIMURxx [149]

Answer:

that the answer let me know if i am wrong hope this helps

Step-by-step explanation:

ANSWER.  77 adults;  2*77 = 154 children and the rest (315-77-154) = 84 students.

4 0
2 years ago
The martinez family has a walkway around their swimming pool. the area of the walkway can
DiKsa [7]

The width of the walkaway be 4 feet.

<h3>What is Discriminant Formula?</h3>

The discriminant formula is used to determine the nature of the roots of a quadratic equation. The discriminant of a quadratic equationax^{2} +bx+c=0 is D =b^{2} -4ac

If D > 0, then the equation has two real distinct roots.

If D = 0, then the equation has only one real root.

Given that: Area\; of \;walkway,\; a(w)\;= 4w^{2} + 100 w

also, area of walkaway = 464 square feet.

So, 4w^{2} + 100 w =464

     4w^{2} + 100 w -464=0

Using Discriminant method,

a=4, b=100, c=-464

w= \frac{-b\pm\sqrt{b^{2}-4ac} }{2a}

w= \frac{-100\pm\sqrt{(100)^{2}-4*4*(-464)} }{2*4}

w= \frac{-100\pm\sqrt{17424} }{8}

So, w_1= \frac{-100+\sqrt{17424} }{8} \;\;\;\; w_2= \frac{-100-\sqrt{17424} }{8}

w_1= \frac{-100+132 }{8} \;\;\;\; w_2= \frac{-100-132}{8}

w_1 = 4 \;\;\;\; and \;\;\; w_2= -29

Hence the width of the walkaway be 4 feet.

Learn more about discriminant formula here:

brainly.com/question/2615966

#SPJ1

8 0
1 year ago
(21 POINTS) Don't explain answer just put what you got, I'm only comparing answers that's all.
m_a_m_a [10]

Answer:

This may not be that accurate as I am a bit rusty with trigonometry:

tan D: d/f

sin F: f/e

tan F: f/d

cos F: d/e

sin D: d/e

cos D: f/e

8 0
3 years ago
20 points and brainliest to first correct answer :)
laila [671]

Answer:

7(tan50°)

Step-by-step explanation:

<em>so </em><em>first </em><em>you </em><em>need </em><em>to </em><em>find </em><em>which</em><em> </em><em>formula </em><em>will </em><em>be </em><em>using </em><em>to </em><em>do </em><em>this </em><em>you </em><em>need </em><em>to </em><em> </em><em>find </em><em>if </em><em>you </em><em>are </em><em>talking </em><em>about </em><em>the </em><em>hypotenuse</em><em>,</em><em> </em><em>opposite </em><em>or </em><em>adja</em><em>c</em><em>ent</em><em>.</em>

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5 0
2 years ago
Read 2 more answers
A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than
Reptile [31]

The probability that a randomly selected customer takes more than 10 minutes will be 8.38%

<em><u>Explanation</u></em>

The average or mean(\mu) is 8.56 minutes and standard deviation(\sigma) is 1.04 minutes.

<u>Formula for finding the z-score</u> is:   z= \frac{X-\mu}{\sigma}

So, the z-score for X= 10 minutes will be.....

z(X=10)=\frac{10-8.56}{1.04}=\frac{1.44}{1.04}=1.3846... \approx 1.38

Now, according to the standard normal distribution table,  P(z . So.....

P(X>10)=P(z>1.38)= 1-P(z

So, the probability that a randomly selected customer takes more than 10 minutes will be 8.38%

3 0
3 years ago
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