30 POINTS + BRAINLIEST HELP ASAP

Which of the following is NOT a rational expression?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

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.

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.