Isosceles trapezoid abcd has legs ab and cd and base bc. if ab=6y-6, bc=4y-7, and cd=7y-12, find the value of y.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25