Write each fraction or mixed number as a decimal. 8 21/40
1 answer:
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Answer:
The sample mean is of 266.5 dollars.
Step-by-step explanation:
Sample mean:
The sample mean is given by the sum of all values in the sample divided by the number of values.
In this question:
12 values.
The sum is:
115 + 370 + 250 + 93 + 540 + 225 + 177 + 425 + 318 + 182 + 275 + 228 = 3198
The sample mean is:
The sample mean is of 266.5 dollars.
Their beginning time was 16.06 minutes.
<u>Step-by-step explanation:</u>
The track team is trying to reduce their time for a relay race.
First they reduce their time by 2.1 minutes, take it as . Then they are able to reduce that time by 10 minutes, take it as
. Let ‘X’ be the time in minutes at the beginning.
Given that their final time is 3.96 minutes, then their beginning time can be calculated as below,
By substituting the values, we get
Hence, their beginning time was 16.06 minutes.