In the series 7+15+23+31 determine:

i) the common difference
ii) the difference between the 10th and 15th terms.
iii) The value of n given that Tn=103
iv) The general term of the series.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.