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vfiekz [6]
3 years ago
12

Find the value of x. 13,15,17,x,20,21; The median is 18.

Mathematics
1 answer:
dimaraw [331]3 years ago
4 0

Answer:

1

Step-by-step explanation:

<em>13  15  </em>17  <u>x</u>  <em>20  21</em>

<em>Cross out all outer numbers</em>

We are left with 17 and x

With double medians, you add those two together and then divide them by two.

With the median (total) being 18, we will first add 17+x then divide Y/2 = 18

The value of x is 1

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Answer:

C

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - 3, so

y = - 3x + c ← is the partial equation

T find c substitute (2, - 1) into the partial equation

- 1 = - 6 + c ⇒ c = - 1 + 6 = 5

y = - 3x + 5 ← in slope- intercept form

Add 3x to both sides

3x + y = 5 ← in standard form → C

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3 years ago
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What are the coordinates of (-4,-2) rotating 90° counterclockwise?
RUDIKE [14]

Answer:

(2, -4)

Step-by-step explanation:

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A <u>rotation</u> of 90° counterclockwise means:

A 90° rotation counterclockwise with the origin (0, 0) as the center of rotation.

The rule for a counterclockwise rotation of 90° about the origin is:

(x, y) → (-y, x)

Therefore:

(-4, -2) → (2, -4)

Learn more about transformations here:

brainly.com/question/27013652

brainly.com/question/28225350

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1 year ago
What is 2(x+14)+(2x-14
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a reflecting pool is shaped like a right triangle with one leg along the wall of a building. the hypotenuse is 9 feet longer tha
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a^2 + b^2 = c^2

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3 years ago
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