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3 years ago

7. A bag contains 6 red and 10 black

Mathematics

2 answers:

Tanya [424]3 years ago

8 0

Answer:

125

Step-by-step explanation:

To find the expected number of black marbles, take the probability of getting a black marble times the number of marbles drawn

P(black) * 200

5/8 *200

125

We should expect 125 black marbles

Vaselesa [24]3 years ago

3 0

Answer:

125

Step-by-step explanation:

Once you have the theoretical probability of picking a black marble which is 5/8, just multiply the number of drawings by 5/8 to get the answer to problem 8.

200 * 5/8 = 1000/8 = 125

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In your notebook, set up the following subtraction in a vertical format and select the correct answer. Reduce 7y 2y 2 - 7 by 3 -

Elodia [21]

The reduction from of the equation is $\rm -2y^2+11y-10$ .

<h2>Given that</h2>

Reduce the equation; $\rm 7y +2y ^2 - 7$ by $\rm 3 - 4y$ .

<h3>According to the question</h3>

To reduce the given equation follow all the steps given below.

Reduce the equation; $\rm 7y +2y ^2 - 7$ by $\rm 3 - 4y$ .

To reduce the equation means we need to subtract one equation from another.

Then,

The reduction from the equation is,

$\rm =7y-2y^2-7-(3-4y)\\
\\
= 7y-2y^2-7-3+4y\\
\\
= 11y-2y^2-10\\
\\
= -2y^2+11y-10$

Hence, the reduction from of the equation is $\rm -2y^2+11y-10$ .

To know more about Subtraction click the link is given below.

brainly.com/question/26182329

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