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4 years ago

11

Samantha is training for a race. The distances of her training runs form an arithmetic sequence. She runs 1 mi the first day and

2 mi the seventh day.
a. What is the explicit definition for this sequence?

b. How far does she run on day 19?

1 answer:

Nezavi [6.7K]4 years ago

5 0

B Because how far does she runs on day 19

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zhuklara [117]

Answer: The probability of picking 7 and then picking a number greater than 7 is $\frac{1}{3}$ or 0.3

Step-by-step explanation: Probability

Probability shows us the chances of an event occurring.

Now, given that we have already picked three cards. therefore, 7, 8, and 9.

The number of possible outcomes is 3.

the probability of card 7,

Now, as card seven is already picked up cards 8 and 9 are the only card left.

therefore, the sample size(possible outcomes) was reduced to 2 only.

Also, cards 8 and 9 both are greater than 7, thus the desired outcome is also 2.

Further the probability of the number greater than 7 occurring,

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The probability of picking a 7 and then picking a number greater than 7

= Probability of card 7 occurring x probability of card 8 and 9 occurring.

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2 years ago

Jordan has 3 blue marbles and 8 red marbles. What is the ratio of blue marbles to red marbles?

fenix001 [56]

Answer:

The ratio of blue to red marbles is 3 to 8.

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3 years ago

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Nutka1998 [239]

Answer:

y = 2 that sign means equal to so its literally another way to write =

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3 years ago

Which is bigger? 9^27 or 3^81? Hint: can you write 9^27?

Tamiku [17]

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Answer:

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3 years ago