Solve for x. 20x + 5 =5x+65

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

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

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?