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posledela
3 years ago
9

Find the surface area. 13.5 in 9 In 9 in. 10 in.

Mathematics
2 answers:
n200080 [17]3 years ago
3 0

Answer:

486 in

Step-by-step explanation:

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alexandr402 [8]3 years ago
3 0
486 in is the surface area
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Need help ASAP! No links please, WILL REPORT.
lozanna [386]

Step-by-step explanation:

Given,

Angle ADC = 118°

According to the question

11x - 7 + 5x - 3 = 118

=  > 11x   - 7 + 5x = 118 + 3

=  > 11x + 5x = 121 + 7

=  > 16x = 128

= x =  \frac{128}{16}

=  > x = 8

Now let's find the value of angle ADB

In the question it is mentioned that Angle ADB = (11x - 7)°

We know that x = 8 °

<h3 /><h3 /><h3>so let's get into this sum :)</h3>

Angle ADB = (11x - 7)°

= (11 × 8 - 7)°

= (88-7)°

= 81 °

So the answer is the first option i.e. 81°.

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2 years ago
Divide any 4 polygons into triangles by dividing them into diagonals.
horrorfan [7]

Step-by-step explanation:

The most remarkable and important property of triangles is that any polygon can be split up into triangles simply by drawing diagonals of the polygon. This fact forms the basis for understanding why the interior angles of polygons add up to 180(n-2) degrees.

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7 0
2 years ago
Which value of x satisfies the equation 5(2x-9)+3=-7
vodka [1.7K]

Answer:

x = 7 / 2

Step-by-step explanation:

5(2x - 9) + 3 = -7    ---------- subtract 3 from both sides

5(2x - 9) + 3 - 3 = -7 - 3

5(2x - 9) = -10   ------ divide both side by 5

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x = 7 / 2

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How can coordinate proof be used to show segments are congruent?
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