What solution does this equation have: -2x+5y=10 and -4x+10y=20? a.) the only solution is (5,4) b.) there are infinitely many solutions c.) the only solution is (10,6) d.) there are no solutions

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?