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Delvig [45]
4 years ago
14

10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then

randomly selected. What is the probability of selecting two prime numbers?
A) 2/15
B) 4/18
C) 7/90
D) 1/10
Mathematics
1 answer:
katrin [286]4 years ago
4 0
The primes in the set [1,10] are 1,2,3,5,7 and the number of elements is 10 so

(5/10)(4/9)=20/90=2/9

which for some reason they converted to 4/18 :P
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Step-by-step explanation:

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3 years ago
A square pool is surrounded by a paved area that is 2 metres wide. If the area of the paving is 72m2, what is the length of the
likoan [24]

The length of the square pool is 8. 49cm

<h3>How to determine the area</h3>

Note that the formula for finding the area of a square is given as;

Area = length^2

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Substitute into the formula

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Learn more about area of a square here:

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2 years ago
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Ray Of Light [21]

Answer:

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Step-by-step explanation:

The general equation of a straight line is given as;

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5 0
3 years ago
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juin [17]

Answer:

Step-by-step explanation:

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4 0
3 years ago
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laiz [17]

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Step-by-step explanation:

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Hope this helps!

5 0
3 years ago
Read 2 more answers
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