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abruzzese [7]
3 years ago
13

What is the value of ▲ in the equation shown? 7 x 9 = (7 x 10) - (7 x ▲) =_____

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
4 0
I'm changing the triangle to x to make it easier to look at.
63=70-7x<span>
subtract by 70 to get 7x by itself
-7= -7x
Divide by -7 to both sides to get x
</span><span>▲=1</span>
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Step-by-step explanation:

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Answer:

30% probability that the ball taken from B is red.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

Red ball from urn A:

3/6 = 1/2 probability of getting a red ball from urn A.

Then urn B will have 5 balls, 2 of which are red, so 2/5 probability of getting a red ball.

Blue ball from urn A:

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Total:

p = \frac{1}{2}*\frac{2}{5} + \frac{1}{2}*\frac{1}{5} = \frac{2}{10} + \frac{1}{10} = \frac{3}{10}

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3 years ago
An object is moving at a speed of 850 miles per hour. Express this speed in meters per minute.
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Answer:

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8 0
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