Solve the problem.Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students and B's to the next 23%. What is the bottom cutoff for a B grade? Round your answer to the nearest whole number.
A. 74
B. 66
C. 76
D. 71
Answer: A
Mathematics
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Solve the problem.The price of a necklace is $5.99. If the salesperson's rate of commission is 14%, how much commission is earned on the sale of the necklace? Round to the nearest cent.
A. $8.39 B. $0.84 C. $8.49 D. $0.85
Mathematics
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.-2
A. Complex, pure imaginary, nonreal complex B. Nonreal complex C. Complex D. Real, complex
Mathematics
Find the derivative of the function.
?Â
What will be an ideal response?
Mathematics
Answer the question or write an explanation.Is (8x5y2)4Â equivalent to 32x20y8?
What will be an ideal response?
Mathematics