1sqmeter=100x100=100000sqcm
in 1sqcm there are 23/100=.23 grass plants
Therefore, there will be .23x100000=2300 grass plants in a sq.meter
A. A> 8.3
Hope that helped
3 Because 7 x 3 = 21 and 7 + 3 = 10
7 x w = 21 and 7 + w = 10
<span>N = N0 e^(-kt)
for half life N/N0 = 1/2 and k = 0.1459
1/2 = e^(-0.1459t)
=> -0.1459 t = ln(0.5)
t = - ln(0.5) /0.1459
= 4.8 days </span>
8 and a half, Its pretty easy to figure this out, just 0.4 x 8 and that is 3.2 then add a half.
