If the perimeter of a triangle is 9x + 7y, and two of the sides are 2x + 3y and 4x − y, which is the third side?

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?