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LUCKY_DIMON [66]
3 years ago
5

Daria selected a number from the positive integers less than 10. What is the probability that she selected a prime number?

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
7 0

Answer:

  4/9

Step-by-step explanation:

There are 9 positive integers less than 10: {1, 2, 3, 4, 5, 6, 7, 8, 9}.

The 4 primes less than 10 are ... {2, 3, 5, 7}.

The probability Daria selected a prime is 4/9.

Misha Larkins [42]3 years ago
5 0

Answer:

4/9

Step-by-step explanation:

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What was the average speed if I drove 60 miles per hour to get to my grandmas house and 30 miles per hour to get home. Represent
siniylev [52]

Answer:

40 mph.

Step-by-step explanation:

Suppose grandma's house is  30 miles away (any distance would do but 30 is convenient).

Speed = distance / time

time = distance / speed

Time to get there =  30/60 = 1/2 hour.

Time to get back = 30/30 = 1 hour

Average speed  = total distance/ total time

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= 60 / 1.5

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You cannot take the average of the speeds directly

(60+ 30)/2  = 45 is not correct as you cannot average ratios ( speed is a ratio).

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3 years ago
Which of the following rational functions is graphed below?
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Mara carried water bottles to the field to share with her team at halftime. The water bottles weighed a total of 60x^2 + 48x + 2
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Answer:

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Step-by-step explanation:

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The correct answer is B


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