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labwork [276]
3 years ago
12

A chorus has 5 girls and 15 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys?

Mathematics
2 answers:
Sonbull [250]3 years ago
8 0

Answer:

Step-by-step explanation:

If you ad them together you get 20 15/20 are boys 15 divided by 20 is .75

Galina-37 [17]3 years ago
8 0
.75 or 75%

If there’s 20 kids total in the class and 15 out of the 20 are boys then you would divide the 15 by 20 and get .75 if you were doing it for girls then you would divide 5 by 20 and you would get .25 or 25%
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Which table has a constant of proportionality between y and x of 10?
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Answer:

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Step-by-step explanation:

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table C shows constant proportionality :

90/9=140/14=240/24=10

5 0
2 years ago
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alexandr402 [8]
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8 0
3 years ago
Please help me with this question!
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2 years ago
Need help on 9 and 10
Wewaii [24]
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4 0
3 years ago
Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)
Rama09 [41]
A= 3
b= 4

=3.14(a^2 + ab)
substitute the given a & b values in expression

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multiply inside parentheses

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add inside parentheses

=3.14(21)
multiply

=65.94


ANSWER: 65.94

Hope this helps! :)
4 0
3 years ago
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