If Sam grows 7/8 cm a day, how much taller will he be in 30 days?

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

What statement is true? 2x^2-9x+2=-1