During a promotion a music store gives a free cd to every 15th customer and free dvd to every 40th customer. which customer will be the first to get both gifts?

Three times the sum of a number and seven is negative thirty-six. what is the number?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?