Find the area of the rectangle or square.
19 in.
A. 2156 square inches
B. 2166 square inches
C. 1805 square inches
D. 133 square inches
Answer: B
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The slope of a line tells how much the line rises for each unit of run.
Answer the following statement true (T) or false (F)
Perform the indicated operation. Write the answer in scientific notation.(19.9 × 109) ÷ (5 × 10-2)
A. 3.98 × 107 B. 3.98 × 1011 C. 7.96 × 107 D. 7.96 × 1011
Solve the problem.In an electric circuit, the electromotive force is defined as 
where t is time in seconds. Solve the equation for t.
A. t = 2? cos V
B. t = 
arccos V
C. t = 2? arccos V
D. t = 
cos V
Sprint would like to take customers from Pacific Bell, one of its competitors in a certain geographical area. Sprint would like to survey Pacific Bell's customers in order to find out which elements of its service are least satisfactory. Which of the following procedures would be most appropriate for obtaining a statistically unbiased sample? ?
A. Survey a random selection of people chosen from a list of Pacific Bell's customers. B. Survey a random selection of people chosen from a list of Sprint's customers. C. Place newspaper advertisements seeking survey participants and survey 100 people randomly chosen from those who respond. D. Call local phone numbers and ask the person who answers if they are satisfied with their phone service.