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2 years ago

12, 20, 5, 7, 6, 10, 18, 5, 20, 17MeanMedian

Mathematics

1 answer:

Tresset [83]2 years ago

3 0

Answer:

Mean: 12

Median: 11

Step-by-step explanation:

For the median you would put the numbers in order from least to greatest (5, 5, 6, 7, 10, 12, 17, 18, 20, 20) then find the middle. But in this case, since there is two in the middle, you add them and divide that number by 2.

For the mean, you add all of the numbers up together to get 120. Then divide by the amount of numbers there are, which is 10, to get 12.

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What is the area of this triangle ?

oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

$Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}$

We need to find the lengths of side DE, EF and FD

Length of side DE = a = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side DE = a = $=\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60$

Length of side EF = b = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side EF = b = $=\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8$

Length of side FD = c = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side FD = c = $=\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4$

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

Area of triangle= $=\sqrt{s(s-a)(s-b)s-c)}\\=\sqrt{9.2(9.2-8.6)(9.2-5.8)(9.2-4)}\\=\sqrt{9.2(0.6)(3.4)(5.2)}\\=\sqrt{97.5936}\\=9.88$

So, area of triangle is 9.88 units^2

4 0

3 years ago

On Tuesday a local hamburger shop sold a combined total of 237 hamburgers and cheeseburgers. The number of cheeseburgers sold wa

AlekseyPX

Answer 79

Method trial and error until 158 cheeseburger and 79 hamburger

7 0

3 years ago

What is the solution to the equation x + 7.5 = 21.5? A.x = 2.9 B.x = 7.8 C.x = 14 D.x = 29

dedylja [7]

X+7.5=21.5
Subtract 7.5 from both sides
X=14 which is C
hope this helps good luck have a nice day

8 0

2 years ago

Read 2 more answers

An office supplies salesperson sold $1,284 in week 1, $976 in week 2, $489 in week 3 and $1,042 in week 4.

Hatshy [7]

For the answer to the question above asking an<span> office supplies salesperson sold $1,284 in week 1, $976 in week 2, $489 in week 3 and $1,042 in week 4.
Is this an incomplete question or you are asking for the total sales?
should I add them up? The answer would be 3,791</span>

6 0

2 years ago

an organic form uses 3/7 of the land to grow potatoes and 2/5 of the land to grow spinach. The remaining land is used to grow to

zheka24 [161]

1/37 of land is used to grow tomatoes.

7 0

3 years ago

12, 20, 5, 7, 6, 10, 18, 5, 20, 17MeanMedian​

12, 20, 5, 7, 6, 10, 18, 5, 20, 17MeanMedian