Answer: 721/100 is 7.21 as a simplified fraction.
9514 1404 393
Answer:
a) turning point: (-2, -1)
b) roots: (-3, 0), (-1, 0)
Step-by-step explanation:
The turning point is correctly identified as the vertex in the problem picture.
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The roots are the x-intercept points: (-3, 0) and (-1, 0).
Answer: 139
Step-by-step explanation:
As per given , we have
The amount of caffeine per cup is ranging from 60-180 mg.
Range = Maximum - Minimum = 180 -60 =12
According to Range -rule ,
Standard deviation =
Formula for sample size : , where z* is critical z value and E is margin of error.
By z-table , the critical z-value for 95% confidence interval = 1.96
E= 5
Put all values in formula , we get
Hence, 139 cups of coffee would have be included in the sample.
Your answer would be 0.05 hope I could help!!