Write and solve a system of equations. Be sure to label the variables. The sum of two numbers is twelve. Two times the first number minus three times the second number is four. What are the two numbers? Show and Explain all work.

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles