Which system of equations has only one solution? 4x+2y = 8 x-2y-3 -5x+y6 5x-y=-6 -3x+4y=2 3-4y=0 2x + 4y = 6 3x - 4y-9

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?