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Mademuasel [1]
3 years ago
14

Please help will give brainliest

Mathematics
1 answer:
garri49 [273]3 years ago
5 0

Answer:

b = 17

Step-by-step explanation:

For this triangle we have to

a=18.2\\B=62\°\\C=48\°

We want to find the length of b

We know that the sum of the internal angles of a triangle is 180 °

So

A + 62 +48=180\\\\A=180-62-48\\\\A=70\°

Now we use the sine theorem to find the length of b:

\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}

Then:

\frac{sin(A)}{a}=\frac{sin(B)}{b}\\\\b=\frac{sin(B)}{\frac{sin(A)}{a}}\\\\b=a*\frac{sin(B)}{sin(A)}\\\\b=(18.2)\frac{sin(62)}{sin(70)}\\\\b=17

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The perimeter of square is 24cm, find its<br>area<br>​
mihalych1998 [28]

Answer:

Answer is 36cm

Step-by-step explanation:

Given:-

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To Find:-

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Solution:-

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We know that, formula of the area of a square,

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Important formula:-

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I hope it's helpful!

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Answer:

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GaryK [48]

Answer:

142°

Step-by-step explanation:

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7 0
3 years ago
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Sheri's brother gave Sam his collection of stamps when she left for college. At that
pychu [463]

Answer: $70 per year.

Step-by-step explanation:

Let's say that x is the number of years that has passed and y is how much the stamp is worth.

So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates  (0,420) .

Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)

To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.

420 - 980 = -560

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The rate of change is 70 which means that it grew by $70 every year.

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