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3 years ago

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

Mathematics

1 answer:

GrogVix [38]3 years ago

6 0

Answer:

The angle = 144 degrees.

Step-by-step explanation:

Look at it this way (it is a proportion question)

30 people would require a pie chart made of a full circle (360 degrees)

12 people would require x part of the pie chart.

30/360 = 12 / x Cross multiply

30x = 360 * 12 Simplify the right

30x = 4320 Divide by 30

30x/30 = 4320/20

x = 144 Answer

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Answer:

Yes; Opposite sides are congruent, and diagonals are congruent.

Step-by-step explanation:

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$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

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substitute the values

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$d=\sqrt{(-5)^{2}+(-4)^{2}}$

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Compare the length of the diagonals

AC=BD

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Diagonals are congruent

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