Answer:
Step-by-step explanation:
14 = 1000
.014 =
ln(.014) = k ln(e)
k = -4.268
~~~~~~~~~~~~~~~~~~
after 3 hrs
1000
0.00274
~~~~~~~~~~~~~~~
4 = 1000
.004 =
ln(.004)/-4.268 = t
t = 1.29368 hrs
Answer:
30%
Step-by-step explanation:
total boxes of pizza = 20
he gave away 14 boxes
so pizza left is 20 - 14 = 6 boxes
to calculate percentage = 6 / 20 * 100
= 6 * 5
= 30%
We can divide each digit by 7. So 56/7=8 and 21/7=3
so.... 8:3