Two angles in a triangle add up to 115 degrees what is the size of the third angle?

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

What are the solutions to the equation 4x2+3x=24-x

What is the area of the triangle 10 13 12