2(4)+2(6)=20cm^2 because opposite sites in a parallelogram are always the same length
$29.25 use a calculator, 225 - 13% = 195.75, 225 - 195.75 = 29.25
Dt = 2(0.8)t = 1.6t = 1.6(10) - 1.6(5) = <span>8 m/s</span>
two intersecting lines can only have 1 solution.
