Answer:
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Step-by-step explanation:
Answer:
20
Step-by-step explanation:

W = 0
Twelve times one is 12 so 12+w has to equal 12
It is A because it can’t be B and it can’t be C and it can’t be D so my answer is A
Answer:
b. 85
Step-by-step explanation:
Average grade (μ) = 75
Standard deviation (σ) = 8
Assuming a normal distribution, the z-score corresponding to the upper 10% of the test grades is z = 1.28.
The minimum grade 'X' within the top 10% is given by:

Rounding to the nearest percent, the dividing point between an A and a B grade is 85.