Tatiana ran a marathon with a average speed of 0,09 miles per minute. what was here speed to the nearest mile per hour

 The speed of Tatiana to the nearest mile per hour is 5.4 miles per hour.

Step-by-step explanation:  Given that Tatiana ran a marathon with a average speed of 0,09 miles per minute.

We are to find her speed to the nearest mile per hour.

We know that

1 hour = 60 minutes.

According to the given information, we have

In 1 minute, Tatiana ran = 0.09 miles.

So, in 60 minutes, she ran = (0.09 × 60) = 5.4 miles.

Therefore, in 1 hour, she ran 5.4 miles.

Thus, the speed of Tatiana to the nearest mile per hour is 5.4 miles per hour.

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answer: d.) the total number of protons and neutrons is 15

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step-by-step explanation: