Express the terms of the following sequence by giving an explicit formula. -1/2,-1 1/2, -21/2, -3 1/2,.. A. an = 1/2 - n, where n = 1, 2, 3, 4, ...
B. an = 2n, where n = 1, 2, 3, 4, ..
C. an = 1/2 - 2n, where n = 1, 2, 3, 4, ...
D. an = 1/2n , where n = 1, 2, 3, 4, ...​

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

If the scale factor between two circles is 2x/5y what is the ratio of their areas?