The list of values respresents the number of ladders that several home improvement stores currently have in stock. Find the range.
{4,9,2,12,1}

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.