Brian claims that he can eat a pie that is divided into six equal pieces In two minutes.If he can eat the whole pie in two minut
1 answer:
Answer:
He have to eat each piece in
Step-by-step explanation:
Given:
Brian claims that he can eat a pie that is divided into six equal pieces In two minutes.
If he can eat the whole pie in two minutes.
Now, to find the time he have to eat for each piece.
So, to solve by using unitary method:
If Brian can eat 6 pieces in = 2 minutes.
Then, he can eat 1 piece in =
Therefore, he have to eat each piece in
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Answer:
The minimum score required for an A grade is 88.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
Find the minimum score required for an A grade.
Top 12%, which is at least the 100-12 = 88th percentile, which is the value of X when Z has a pvalue of 0.88. So it is X when Z = 1.175.
Rounding to the nearest whole number
The minimum score required for an A grade is 88.