Which of the given number sequences represents a geometric sequence? a) -2, -12, 1, 52, 4,...
b) 1, 32, 2, 52, 3,...
c) -7, -14, -21, -28, -35,...
d) 3, 9, 27, 81, 243,...

What is the ratio of the length of an object in yards to the length of the same object in miles?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%