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vitfil [10]
3 years ago
10

A bowl contains 7 red balls and 10 blue balls. A woman selects 4 balls at random from the bowl. How many different selections ar

e possible if at least 3 balls must be blue?
Physics
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

1050 possible selections

Explanation:

<em>Number of red balls = 7</em>

<em>Number of blue balls = 10</em>

<em>Let blue balls be B and red balls be R</em>

<em>four balls are to be selected. At least three must be blue.</em>

the first combination is 4blue 0red

second combination is 3blue 1red

(10C4*7C0 + 10C3*7C1)

210 *1 +120 *7

210+840

=1050 possibilities

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tangare [24]

The Atmosphere in Jupiter is full of gases that move at high speeds in giant eddies. Its atmosphere consists mostly of gases such as hydrogen that generate a temperature fluctuation of around 128K.

On Earth, due to the protection of the Ozone Layer and the presence of Nitrogen and Oxygen, the temperature fluctuates by an average of 300K.

In the case of Mars, its atmosphere is thin, mostly composed of Carbon Dioxide and Diatomic Nitrogen, which allow a temperature oscillation of 210K.

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Correct Answer is A.

7 0
3 years ago
Consider a coin which is tossed straight up into the air. After it is released it moves upward, reaches its highest point and fa
avanturin [10]

Answer:

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3 0
3 years ago
True of false metals like copper are sometimes used to fill cavities in teeth
vovikov84 [41]
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zzz [600]

Answer:

Explanation:

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8 0
3 years ago
If a 75 W lightbulb is 15% efficient, how many joules of light energy does the bulb produce every minute?
stiks02 [169]

Answer:

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P = 4500 J / min * .15 = 675 J / min

4 0
2 years ago
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