Tell whether the sequence is arithmetic. if it is, what is the common difference? 15, 19, 23, 27 a. yes; 34 b. yes; 4 c. yes; 15/19 d. no

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d

The longer leg of a 30-60-90 trangle is 18