Yequals 3x
x equals negative 2y +70

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

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?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?