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Alla [95]
2 years ago
8

Will mark brainliest

Mathematics
1 answer:
kiruha [24]2 years ago
5 0

Answer: 64

Step-by-step explanation: that’s the answer

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Given that cos(theta) = 8/17 and that theta lies in Quadrant IV, what is the exact value of sin 2(theta)?
Deffense [45]

Answer:    -\frac{240}{289}

=========================================================

Explanation:

Use the pythagorean trig identity \sin^2(\theta)+\cos^2(\theta) = 1 and plug in the fact that \cos(\theta) = \frac{8}{17}\\\\

Isolating sine leads to \sin(\theta) = -\frac{15}{17}\\\\. I'm skipping the steps here, but let me know if you need to see them.

The result is negative because we're in quadrant 4, when y < 0 so it's when sine is negative.

Therefore,

\sin(2\theta) = 2\sin(\theta)\cos(\theta)\\\\\sin(2\theta) = 2*\left(-\frac{15}{17}\right)*\left(\frac{8}{17}\right)\\\\\sin(2\theta) = -\frac{240}{289}\\\\

6 0
2 years ago
Y = 7/2x + 10 y = -7/2x - 1/10 these lines have perpendicular slopes. True or false?
forsale [732]

Answer: This is False because they don't go together and it doesn't make sense.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Will give Brainliest! if right!
attashe74 [19]
W = 6
b = 4
You have a 3/5 chance every time to pull a white marble.
35 x 0.6 (6/10) = 21.
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3 years ago
The equation of the line in standard form is...
Rudik [331]

Answer:

5x+9y=-16

Step-by-step explanation:

here is my work although I am not 100 percent sure I am right because,I am learning the same thing as you

-6+1 over 4+5

y+1=-5/9(x+5)

y+1=-5/9x-25/9

y=-5/9x-16/9

5/9+y=-16/9

5x+9y=-16

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3 years ago
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Finding the speed of the ball.
12345 [234]
Divide the distance by the time and you will get your answer
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