if 3cm=2km then 18km= ______
15 5/10
1.6 x $10^{6}$
Calculate the volume of timber remaining after a 150mm long hole has beed drilled through a wooden sphere
16 3/6
y^2 - 5x + 12y = -16 to standard form
3a - 2a = -1, a + 3a = 7
a = ?
a + 4a =?
if 3a - 2a = -1 and a + 3a = 7
of a + 4a =?
if 3? - 2? = -1 and ? + 3? = 7, the answer of ? + 4?=
