Answer:
The region between one standard deviation from the mean is (400,600) which should be 68.27% of the data.
Step-by-step explanation:
The mean of this data set is 500 and the standard deviation is 100. The data that are within one standard deviation of the mean, must be in the range between 400 and 600, which according to the normal curve should be about 68.27% of the samples. The shaded region is shown in red on the attached figure.
The time required to cut the area of 40 feet by 30 feet will be 37.5 minutes.
The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Mike can cut a 40-foot by 20-foot yard with a push mower in 25 minutes. The time required for 40 foot x 30-foot area will be calculated as:-
40 x 20 foot yard = 25 minutes
800-foot yard = 25 minutes
1 foot yard = 25 / 800
( 40 x 30 ) foot yard = ( 25 / 800 ) x ( 40 x 30 )
1200 foot yard = ( 25 / 800 ) x ( 1200)
1200-foot yard = 37.5 minutes
Therefore, the time required to cut the area of 40 feet by 30 feet will be 37.5 minutes.
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Answer:d
Step-by-step explanation:
Answer: 20 ft
Step-by-step explanation:
The mirror is set away from the flagpole on the same scale set away from her.
The distance she stand's away from the mirror is 1/4 of the length of the distance between the mirror and the flag pole because she's 1/4 of the flagpole's size.
This means her size x4 is the size for the flag pole. This checks out because 12x4=48
So to find the height we must do 5x4
5x4=20
What's the value if D(15)
Answer:
A EDGE 2021!
Step-by-step explanation: