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4 years ago

Please help, geometry

Mathematics

2 answers:

Airida [17]4 years ago

7 0

Step-by-step explanation:

As it is a quadrilateral so sum of all angles of quadrilateral is equal to 360°

14x - 11° + 8x + 7° + 5x + 18° + 10x + 13° = 360°

37x+ 27° = 360°

37x = 360° - 27°

37x = 333°

x = 333° / 37

Therefore x = 9°

Now

<B = 8 * 9° + 7° = 79°

Hope it will help you.

Eddi Din [679]4 years ago

3 0

Answer: <u>The answer is 79.0°</u>

Step-by-step explanation:

A quadrilateral will always have 360° and four sides. Keep that in mind, that's a universal rule of geometry.

Here, the sum of all sides is equal to 360°. Therefore, we make an equation:

$(14x-11) + (8x+7) + (5x+18) + (10x + 13) = 360$

Simplify by adding and subtracting like terms.

$37x +27=360$

Isolate x by first passing the 27 to the other side.

$37x = 333$

Divide by 37 to isolate x.

$x = 9$

To find m∠B, we plug in x to $(8x+7)$

which gives you: $(8*9+7) = 79$

The answer is 79.0°

Curious if it is correct? Let's double check.

Plug in the x=9 to all the x values and add them up. You should get 360, which makes the answer correct.

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3 years ago

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Triss [41]

Answer:

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Step-by-step explanation:

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Part 1)

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m_a_m_a [10]

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