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Nata [24]
2 years ago
8

The interior angle measures of a convex pentagon are consecutive multiples of 4. find the measure of each interior angle.

Mathematics
1 answer:
lawyer [7]2 years ago
3 0

Answer:

100°, 104°, 108°, 112°,116°

Step-by-step explanation:

Let the smallest angle be 4x. Since, the interior angles are consecutive, the other angles are 4(x+1),4(x+2),4(x+3) and 4(x+4).

Sum of interior angles = 540°

4x+4(x+1)+4(x+2)+4(x+3)+4(x+4)=540°

20x+40=540°

20x=(540-40)°

20x=500°

x=(500/20)°

x=25

Using the value of x to calculate the angles:

4x=4*25=100°

4(x+1)=4*26=104°

4(x+2)=4*27=108°

4(x+3)=4*28=112°

4(x+4)=4*29=116°


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You decide to enter in a rowing competition. To train, you go to the boat house and begin rolling down stream. You row for the s
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Answer:

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Step-by-step explanation:

Let speed of boat in still water be = x\ ms^{-1}

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Speed of boat down stream = \textrm{Speed of boat in still water +Speed of current}= (x+10)\ ms^{-1}

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\textrm{Time spent rowing down stream =Time spent rowing up stream}

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Cross multiplying

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Dividing both sides by 400

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Adding 60 to both sides.

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Subtracting both sides by x

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Dividing both sides by 5.

\frac{5x}{5}=\frac{70}{5}

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Speed of boat in still water =14\ ms^-1

Time spent rowing down stream =\frac{2400}{14+10}=\frac{2400}{24}=100\ s

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