Answer:
50%
Step-by-step explanation:
68-95-99.7 rule
68% of all values lie within the 1 standard deviation from mean 
95% of all values lie within the 1 standard deviation from mean 
99.7% of all values lie within the 1 standard deviation from mean 
The distribution of the number of daily requests is bell-shaped and has a mean of 55 and a standard deviation of 4.

68% of all values lie within the 1 standard deviation from mean
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= 
95% of all values lie within the 2 standard deviation from mean
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= 
99.7% of all values lie within the 3 standard deviation from mean
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Refer the attached figure
P(43<x<55)=2.5%+13.5%+34%=50%
Hence The approximate percentage of light bulb replacement requests numbering between 43 and 55 is 50%
Answer:
Step-by-step explanation:
Let the shortest side be x, the other sides are x + 2 and x + 4
<u>Perimeter is:</u>
- P = x + (x + 2) + (x + 4) = 3x + 6
<u>It is given that:</u>
<u>Substitute and solve for x:</u>
- 1/4(3x + 6) = x - 1
- 3x + 6 = 4x - 4
- 4x - 3x = 6 + 4
- x = 10
<u>Perimeter is:</u>
Answer:
C. 6.4 percent.
Step-by-step explanation:
Given,
Labor force = 125 million,
The number of employed workers = 117 million,
So, the number of unemployed workers = Labor force - employed workers
= 125 million - 117 million
= 8 million,
Hence, the unemployment rate = 



= 6.4%
OPTION C is correct.
Area = (39x18)/2 =351
answer = 351 m^2
Answer:
He could have bought 23 lilies by itself
Step-by-step explanation: