Use dimensional analysis to convert the quantity to the indicated units. If necessary, round the answer to two decimal places.27 yd to ft
A. 81 ft
B. 972 ft
C. 243 ft
D. 324 ft
Answer: A
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Solve the given system of equations algebraically. 2x2 + y2 = 173x2 - 2y2 = -6
A. x = 2, y = 3; x = 2, y = -3; x = -2, y = 3; x = -2, y = -3 B. x = 2, y = -3; x = -2, y = 3 C. x = 1, y = 3; x = 1, y = -3; x = -1, y = 3; x = -1, y = -3 D. x = 1, y = 3; x = -1, y = -3
250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.Approximately what percent of the students scored between 65 and 75 points?
A. 95% B. 10% C. 68% D. 34% E. none of these
Determine whether the relation is a function. Give domain and range of the relation.{(-1, -3), (-2, -2), (-2, 0), (2, 2), (14, 4)}
A. function; domain: {-1, 2, -2, 14}, range: {-3, -2, 0, 2, 4} B. function; domain: {-3, -2, 0, 2, 4}, range: {-1, 2, -2, 14} C. not a function; domain: {-1, 2, -2, 14}, range: {-3, -2, 0, 2, 4} D. not a function; domain: {-3, -2, 0, 2, 4}, range: {-1, 2, -2, 14}
Work the application.During the last four months of a recent year, Annie's Natural Food Store reported the following sales.September$2204October$2014November$2280December$4177How much more were the sales in December than the sales in November?
A. $6357 B. $1897 C. $6457 D. $1797