If x + 5y = -11 and 2x − 3y = 17, what is the value of x + y?

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25