3 years ago

What is the range of the middle 50% of the data

Mathematics

2 answers:

pochemuha3 years ago

8 0

Answer:it’s c on edge

Step-by-step explanation:

None

uranmaximum [27]3 years ago

7 0

Hello!

Is there any type of picture? If not I don't think I can help.

Sorry :(

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2 years ago

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────────────

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2 years ago

The point P(2k, k) is equidistant from A(-2, 4) and B (7,-5).<br>Find the value of k.<br>

mario62 [17]

Answer:

k = 3

Step-by-step explanation:

Using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A (- 2, 4 ) and (x₂, y₂ ) = P (2k, k)

AP = $\sqrt{(2k+2)^2+(k-4)^2}$

Repeat

with (x₁, y₁ ) = B (7, - 5) and P = (2k, k)

BP = $\sqrt{(2k-7)^2+(k+5)^2}$

Given that AP = BP, then

$\sqrt{(2k+2)^2+(k-4)^2}$ = $\sqrt{(2k-7)^2+(k+5)^2}$

Square both sides

(2k + 2)² + (k - 4)² = (2k - 7)² + (k + 5)² ← expand factors on both sides

4k² + 8k + 4 + k² - 8k + 16 = 4k² - 28k + 49 + k² + 10k + 25

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20 = - 18k + 74 ( subtract 74 from both sides )

- 54 = - 18k ( divide both sides by - 18 )

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3 years ago