Christine watched a video for 3/8 minutes and she watched another video for 1/8 minutes how long did she watch videos in l
1 answer:
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Answer:
122.0627kg
Step-by-step explanation:
The standard deviation is the square root of the variance.
That means:
From the question, the standard deviation of the weights of the 10 random subjects is 11.0482kg
We substitute to get:
We square both sides to get:
Therefore the variance is 122.0627kg
Answer:
He did not work for 6 days
Step-by-step explanation:
Sam is hired for a 20-day period.
Let x be the no. of days he did not work
So, No. of days he worked = 20-x
he earns per working day = $60
So, he earns for (20-x) days = 60(20-x)
For each day that he does not work, $30 is subtracted from his earnings.
So, Amount deducted for x days = 30x
So, His earning for 20 days =
We are given that At the end of the 20-day period, he received $660
So,
So, he did not work for 6 days
So, Option C is true