1/4y+2x=x solve for y

What are the soultion(s) to the quadratic equation 40- x^2=0

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

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