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Gre4nikov [31]
2 years ago
10

The equation sin (25 degree) equals StartFraction 9 Over c EndFraction can be used to find the length of Line segment A B.

Mathematics
1 answer:
Bumek [7]2 years ago
8 0

Answer:

AB = 21.3

Step-by-step explanation:

Given

\sin(25) = \frac{9}{c}

See attachment

Required

Find AB

We have:

\sin(25) = \frac{9}{c}

Make c the subject

c = \frac{9}{\sin(25)}

c = 21.3

From the attached triangle;

AB = c = 21.3

Hence:

AB = 21.3

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3 years ago
I Need Help Finding The Area. Can Anyone Help Me Please?
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4 0
3 years ago
Answer this problem<br>-3+(-2)​
Nikolay [14]

Answer:

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2 years ago
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Find the product of the given complex number and its conjugate.<br> 1/5+4i
nasty-shy [4]

Answer:

-15.96

Step-by-step explanation:

A conjugate is a binomial with the sign inside changed. So the conjugate of (1/5 + 4i) is (1/5 - 4i)

Set the original and the conjugate next to each other and F.O.I.L. Multiply the first numbers of each binomial, the 1/5 and the 1/5 to get 1/25. This is the "F."

Multiply the outer members, the 1/5 and the 4i to get - 60i. This is the "O."

Multiply the inner  numbers  ( the + 4i and the 1/5) to get + 60i. This is the "I."

Multiply the positive 4i and the negative 4i to get 16i squared

The positive 60i and the negative 60i cancel each other out.

The i squared changes into - 1. This makes the 16 negative.

Add 1/25 to - 16 to get - 15.96

4 0
3 years ago
If y is directly proportional to x and when y = 35, x = 140, what is the value of x when y = 70?
levacccp [35]

Answer: 280 = x


Step-by-step explanation: Okay you are using this equation! y = kx But you must rearrange it!

When rearranged you get y/x = k

Plug in x and y!

y/x = k

35/140 = k

0.25 = k

Now find the value of x.

You use this formula now, y/k = x

Plug in k from the last problem and y = 70

y/k = x

70/0.25 = x

280 = x



6 0
3 years ago
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