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enyata [817]
3 years ago
9

What is the measure of each interior angle of a regular dodecagon?

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0
D. 150 degrees is ur answer
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9 + 6u = 7u

u = 9 (Subtract "6u" from both sides)


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What is the derivative of -5
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It is computed that when a basketball player shoots a free throw the odds in favor of his making our 23 to 3 find the probabilit
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Answer:

Step-by-step explanation:

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2 years ago
If it takes 6 hours for a plane to travel 720km with a tail wind and 8 hours to make the return trip with a head wind. Find the
denis-greek [22]

The speed of wind and plane are 105 kmph and 15 kmph respectively.

<u>Solution:</u>

Given, it takes 6 hours for a plane to travel 720 km with a tail wind and 8 hours to make the return trip with a head wind.  

We have to find the air speed of the plane and speed of the wind.

Now, let the speed wind be "a" and speed of aeroplane be "b"

And, we know that, distance = speed x time.

\text { Now, at tail wind } \rightarrow 720=(a+b) \times 6 \rightarrow a+b=\frac{720}{6} \rightarrow a+b=120 \rightarrow(1)

Now at head wind → 720=(a-b) \times 8 \rightarrow a-b=\frac{720}{8} \rightarrow a-b=90 \rightarrow(2)

So, solve (1) and (2) by addition

2a = 210

a = 105

substitute a value in (1) ⇒ 105 + b = 120

⇒ b = 120 – 105 ⇒ b = 15.

Here, relative speed of plane during tail wind is 120 kmph and during head wind is 90 kmph.

Hence, speed of wind and plane are 105 kmph and 15 kmph respectively.

6 0
3 years ago
13.
Amiraneli [1.4K]

Answer:

A

Step-by-step explanation:

3 0
2 years ago
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