150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.Carol scored 75 points on the exam. In approximately what percentile of the class does this score place her?
A. 34th percentile
B. 95th percentile
C. 84th percentile
D. 68th percentile
E. none of these
Answer: C
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Solve the problem.The speed of a stream is 4 mph. If a boat travels 88 miles downstream in the same time that it takes to travel 44 miles upstream, what is the speed of the boat in still water?
A. 14 mph B. 8 mph C. 12 mph D. 15 mph
Two similar triangles are given. Find the proportionality constant k such that the length of each side of the larger triangle is k times the length of the sides of the smaller triangle. Then find the length of the missing sides of each triangle.
A. QS = 3, UV = 
, TV = 
B. QS = 3, UV = 
, TV = 
C. QS = 2, UV = 
, TV = 
D. QS = 2, UV = 
, TV = 
Answer the question or give an explanation.Name four posting or recording errors that can cause an unbalanced checking account.
What will be an ideal response?
Answer the question.What does the digit 5 mean in the number 951,913?
A. thousands B. ten-thousands C. hundred-thousands D. hundreds