A standard number cube is tossed. find the following probability. P(less than 3 or even)

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.