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mestny [16]
3 years ago
14

total of 420 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tic

kets sold was three times the number of adult tickets sold. How many adult tickets were sold?
Mathematics
1 answer:
Gnoma [55]3 years ago
4 0
<span>2x + x = 420
3x = 420
x = 140 Adult tickets </span>
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Answer:

Part a) The measure of an exterior angle is 60°

Part b) The measure of an interior angle is 120°

Step-by-step explanation:

step 1

Find the value of x

we know that

A regular polygon has equal sides and equal interior angles

The sum of an interior angle plus an exterior angle must be equal to 180 degrees (supplementary angles)

so

2x+4x=180

solve for x

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step 2

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substitute the value of x

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step 3

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4x

substitute the value of x

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