Answer:
suppose that is the answer
By decreasing each dimension by 1 unit, the area of a rectangle decreased from 20 square feet (on the left) to 12 square feet
1 answer:
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Answer:
5.428571
Step-by-step explanation:
take the fraction and divide that:
then just add 5:
5 + 0.428571 = 5.428571
or...
convert the mixed fraction to improper fraction:
divide like normal:
Answer:
the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
Step-by-step explanation:
The computation of the standard deviation of the speeds of cars is shown below;
The z score for the top 1% is 2.326
So,
= (75 - 61) ÷ standard deviation = 2.326
Standard deviation is
= 14 ÷ 2.326
= 6.0 miles per hour
Hence, the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
