Is (1, 2) a solution of the system?

In triangle opq right angled at p op=7cm, oq-pq=1 determine the values of sinq and cosq

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial