Which expression is equivalent to 10(−45x+3)−2x?

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.