Solve the following System of Equations using Substitution or Elimination Method. 3x + 2y = 12

12x + 8y = -15

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Ten times the square of a non-zero number is eqaul to ninety times the number

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels