3 years ago

What is the median out of these 8 5 4 3 9 6 2 4 is it 5.5?

Mathematics

1 answer:

Ainat [17]3 years ago

4 0

Answer:

4.5

Step-by-step explanation:

arrange the number in ascending order

2 3 4 4 5 6 8 9

middle numbers are 4,5

find the average

4+5/2

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Do midpoint riemann sums get more accurate with more rectangle.

LUCKY_DIMON [66]

Answer:

Yes

Step-by-step explanation:

They get more accurate as they have more data, the more data the more accurate it would be.

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2 years ago

Find the product of the two binomials below<br> (x-8) (x+4)

LekaFEV [45]

Multiply it out
x^2 + 4x -8x -32
Combine like terms
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3 years ago

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Liam sarah and Emily share some money in the ratio 2:3:7 Emily got £80 more than liam how much money did sarah get

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Sarah got £48, Liam got £32, and Emily got £112

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3 years ago

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3 years ago

An isosceles triangle’s altitude will bisect its base. Which expression could be used to find the area of the isosceles triangle

omeli [17]

Answer:

$\dfrac{\sqrt{40}\cdot \sqrt{40}}{2}$

Step-by-step explanation:

The length of the base is the distance between the points 4+2i and 10+4i, so

$\text{Base}=|10+4i-(4+2i)|=|10+4i-4-2i|=|6+2i|=\sqrt{6^2+2^2}=\\ \\=\sqrt{36+4}=\sqrt{40}$

The middle point of the base is placed at point

$\dfrac{4+2i+10+4i}{2}=\dfrac{6i+14}{2}=7+3i$

The length of the height is the distance between the points 5+9i and 7+3i

$\text{Height}=|5+9i-(7+3i)|=|5+9i-7-3i|=|-2+6i|=\sqrt{(-2)^2+6^2}=\\ \\=\sqrt{4+36}=\sqrt{40}$

So, the area of the triangle is

$A=\dfrac{1}{2}\cdot \text{Base}\cdot \text{Height}=\dfrac{\sqrt{40}\cdot \sqrt{40}}{2}$

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2 years ago