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2 years ago

The range of 8,7,12,7,11,10,7,12

Mathematics

2 answers:

Triss [41]2 years ago

7 0

The range is the difference between the largest and smallest values, so the answer is 4

allsm [11]2 years ago

5 0

Answer:

a) Median: 9

b) Range: 5

c) Mode: 7

Explanation:

The median is the number in the middle.

First, you put the numbers in order: 7, 7, 7, 8, 10, 11, 12, 12

The middle of this is 8 and 10, so you plus them and divide by to 2, then it gives 9, so the median is 9.

To find the range, you minus the highest number and the lowest number, 12-7=5.

Mode is the most occurring and repetitive number, in this case, 7, because it is written 3 times.

Read more about this on brainly: brainly.com/question/17122811

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An 8-sided die is formed when two square pyramids are attached by their bases. The perimeter of the base shape is 6 centimeters.

lawyer [7]

Answer:

7.5cm²

Complete question:What is the surface area of the 8-sided figure?

Step-by-step explanation:

Consider the half of the 8-sided die i.e the pyramid ABCDE:

As the base is 6 of the perimeter, so each side of the base is 6/4=3/2

Now, the distance between the tallest points is 2 cm, so the height of Pyramid ABCDE is 1 cm.

Considering the right triangle EOM:

EO=1, OM= 3/4 (it is half of AB=3/2) and EM is the hypothenuse, so by the pythagorean theorem length of EM is

$\sqrt{1+ ( \frac{3}{4} )^{2} }= \sqrt{1+ \frac{9}{16} }= \sqrt{ \frac{25}{16} }= \frac{5}{4} (cm)$

5. So side EBC has area

$\frac{1}{2}BC*EM= \frac{1}{2}* \frac{3}{2}* \frac{5}{4}= \frac{15}{16}$

6. The total area is 8*Area(EBC)= $8* \frac{15}{16}= \frac{15}{2}=7.5 ( cm^{2} )$

3 0

3 years ago

Whats 69.2 as a fraction ??

Vladimir79 [104]

69 and 2/10 or 20/100 pls vote me brainliest

5 0

3 years ago

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Write an irrational number that can be added to the irrational number the square root of 15 to get a rational sum of 2

aniked [119]

Answer:

Step-by-step explanation:

if u is an irrational number added to a rational number (sqrt 15) to yield 2, then that would mean u would = root -1.78.....

which means you wouldn't have a real solution. if you want a complex answer, it would be sqrt(1.78)i

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2 years ago

Solve for y 9x - y = -6x + 4y

Lyrx [107]

Answer:

y = 3x

Step-by-step explanation:

Given

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9x - 5y = - 6x ( subtract 9x from both sides )

- 5y = - 15x ( divide both sides by - 5 )

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3 years ago

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If I have an angle between 10 and 170 degrees, do I have a plane?

Vitek1552 [10]

I have no idea at all man I’m so sorry your math sucks

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2 years ago