Find the product.(4x - 1)(4x + 1)
A. 16x2 + 8x - 1
B. 4x2 + 8x - 1
C. 16x2 - 8x - 1
D. 16x2 - 1
Answer: D
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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 given lines are parallel, perpendicular, or neither.y = x + 6y = -x
A. Parallel B. Perpendicular C. Neither
Multiply.
A. 0.000432 B. 4.32 C. 0.0432 D. 0.432
List the elements of the sample space for the following experiment.
A month is selected from the months that have exactly 31 days. ? a. February b. January, March, April, May, June, July, August, September, October, November, December c. January, March, May, July, August, October, December d. April, June, September, November e. January, March, May, July, August, October