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Fudgin [204]
3 years ago
9

What is Sin A? Cos A? Tan A?

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
6 0

Answer:

See explanation

Step-by-step explanation:

\sin A =  \frac{12}{20}  =  \frac{3}{5}  \\  \\  \cos A =  \frac{16}{20}  =  \frac{4}{5}   \\  \\ \tan A =  \frac{12}{16}  =  \frac{3}{4}

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A birthday celebration meal is $ 46.80
kolezko [41]
10% of 46.80 =4.68
46.80 + 4.68 = 51.48

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3 0
2 years ago
Help me do the math and the steps to do or to get to the answer
Hunter-Best [27]
Pink:
10 * 10 = 100

Blue:
10 * 4 = 40

Purple:
9 * 10 = 90

Green:
4 * 9 = 36

Add them all together.
100 + 90 + 40 + 36 = 266

Have an awesome day! :)
5 0
3 years ago
Which equation represents a proportional relationship?
Andrej [43]

Answer:

B and D

Step-by-step explanation:

A proportional relationship has NO constant term.  Thus, we eliminate Answers A and C.

Answers B and D represent proportional relationships.

7 0
3 years ago
How do u show Ur work to the problem<br> -6p+8p=-16+4p
suter [353]
-6p+8p=-16+4p
Combine like terms
2p=-16+4p
-4p -4p
-2p=-16
/-2 /-2
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4 0
3 years ago
The partial fraction decomposition of 9 x 11 6 x 2 23 x 21 can be written in the form of f ( x ) 2 x 3 g ( x ) 3 x 7 , where
svlad2 [7]

Answer:

f(x) = -1

g(x) =6

\frac{-1}{2x + 3} + \frac{6}{3x + 7}

Step-by-step explanation:

The question is unreadable, however the real polynomial is:

The polynomial fraction is:

P = \frac{9x + 11}{6x^2 + 23x + 21}

And the decomposition is:

\frac{f(x)}{2x + 3} + \frac{g(x)}{3x + 7}

The solution is as follows:

P = \frac{f(x)}{2x + 3} + \frac{g(x)}{3x + 7}

Substitute the expression for P

\frac{9x + 11}{6x^2 + 23x + 21} = \frac{f(x)}{2x + 3} + \frac{g(x)}{3x + 7}

Expand the numerator of the polynomial

\frac{9x + 11}{(2x + 3)(3x + 7)} = \frac{f(x)}{2x + 3} + \frac{g(x)}{3x + 7}

Take LCM

\frac{9x + 11}{(2x + 3)(3x + 7)} = \frac{f(x)*(3x + 7) + g(x)*(2x + 3)}{(2x + 3)(x + 7)}

Cancel out both denominators

9x + 11} = f(x)*(3x + 7) + g(x)*(2x + 3)

Represent f(x) as A and g(x) as B

9x + 11} = A*(3x + 7) + B*(2x + 3)

Open bracket

9x + 11} = 3Ax + 7A + 2Bx + 3B

9x + 11} = 3Ax + 2Bx+ 7A  + 3B

9x + 11} = (3A + 2B)x+ 7A  + 3B

By comparison:

3A + 2B = 9 ---- (1)

7A  + 3B =11 ---- (2)

Make B the subject in (1)

B = \frac{9 - 3A}{2}

Substitute B = \frac{9 - 3A}{2} in (2)

7A + 3(\frac{9 - 3A}{2}) = 11

Multiply through by 2

2*7A +2* 3(\frac{9 - 3A}{2}) = 11*2

14A + 3(9 - 3A) = 22

14A + 27 - 9A = 22

Collect Like Terms

14A - 9A = 22-27

5A = -5

A = \frac{-5}{5}

A = -1

Recall that:

B = \frac{9 - 3A}{2}

B = \frac{9 - 3 * -1}{2}

B = \frac{9 + 3}{2}

B = \frac{12}{2}

B = 6

A = -1 and B = 6

3A + 2B = 9 ---- (1)

7A  + 3B =11 ---- (2)

So:

f(x) = A

f(x) = -1

g(x) =B

g(x) =6

And the decomposition is:

\frac{-1}{2x + 3} + \frac{6}{3x + 7}

6 0
2 years ago
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