A speed of 100 km/h, expressed in cm s-1
300 cm s-1
90 cm s-1
2770 cm s-1
2.5 cm s-1
Speed 90 km/h = 100 km/h x 5/18 =27.7 m/s.
= 27.7 x 100 cm /s
= 2770 cm/s.
Which of the following is a linear expression ?
a) x2×y+xy+1
b) x+y+1
c) x3×y+xy+1
d) 4x2+1