Answer:
9.4 days
Step-by-step explanation:
Filling in the given numbers, we can solve for t:
0.18 = 1·(1/2)^(t/3.8)
log(0.18) = (t/3.8)log(1/2)
t = 3.8·log(0.18)/log(0.50) ≈ 9.4 . . . . days
The best estimate of the age of the sample is 9.4 days.
Answer:
1/2-7=1.5
Step-by-step explanation:
you're welcome
Answer:
<h2><u><em>
9</em></u></h2>
Step-by-step explanation:
the mean is 6 (write on the picture)
so
(7 + 3 + 5 + x) : 4 = 6
(15 + x) : 4 = 6
15 + x = 24
x = 24 - 15
<u><em>x = 9</em></u>
<u><em>--------------------------------</em></u>
check
(7 + 3 + 5 + 9) : 4 = 6
24 : 4 = 6
6 = 6
the answer is good
Answer:
189.27
Step-by-step explanation:
rounded front part has a diameter of 10
that means it has a radius of 5
rounded part's area is area of a cirlcle ÷ 2
area of a circle is pi * radius squared
pi*25=78.54
78.54÷2=39.27
rest of the shapes area is 10 times 15 which = 150
150+39.27=189.27
Answer:
x = 28
Step-by-step explanation: