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k0ka [10]
3 years ago
7

A bag contains 6 red and 10 black marbles. If you pick a marble, record its color and return it to the bag 200 times, how many t

imes can you expect to pick a black marble?
Mathematics
2 answers:
katrin [286]3 years ago
4 0
125.
16 (10 and 6) divided by 100 is 6.25. Times two is 12.5. (For 200) times 10 for 10 marbles.
Sladkaya [172]3 years ago
3 0

Answer:

10

Step-by-step explanation:

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3 years ago
prove that sin theta cos theta = cot theta is not a trigonometric identity by producing a counterexample
Zolol [24]

Answer:

To prove that ( sin θ cos θ = cot θ ) is not a trigonometric identity.

Begin with the right hand side:

R.H.S = cot θ = \frac{cos \ \theta}{sin \ \theta}

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so, sin θ cos θ ≠ \frac{cos \ \theta}{sin \ \theta}

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

<u>Anther solution:</u>

To prove that ( sin θ cos θ = cot θ ) is not a trigonometric identity.

Assume θ with a value and substitute with it.

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