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blondinia [14]
3 years ago
9

How do i solve for n in this problem -6n - (3n - 9) + 5n = -4 (2n - 8)​

Mathematics
1 answer:
DaniilM [7]3 years ago
8 0

Answer:

-6n -(3n - 9) + 5n = -4 (2n - 8)

-6n -3n +9 +5n = -8n +32

-9n +5n +9 = -8n +32

-4n + 9 = -8n +32

8n - 4n = 32 - 9

4n = 23

n = 23/4 = 5.75

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Given that ABCD is a parallelogram, the sum of its interior angles is:
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<h3>What is a parallelogram?</h3>

A parallelogram is a rectilinear two-dimensional figure with four sides whose opposite sides are parallel. See the image attached.

<h3>What is the sum of the exterior angles of CHFE?</h3>

The sum of the exterior angles of any Triangle or any polygon is 360°. Hence, the sum of the exterior angles of CHFE (a polygon) is 360°.

<h3>Which sides are parallel to CE?</h3>

The sides that are parallel to CE are:

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<h3>IJ.

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The side that are perpendicular to CE is side side HH, hence we can state that:

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Because the sum of angles in a triangle is 180° and we already have ∠CEH to be equal to ∠90° hence,

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