Answer:
Step-by-step explanation:
-Solve for 
:
-Combine like terms:
-Add both sides by 
:
So, the value of is 
.
Answer:
Step-by-step explanation:
if 2
= 
The product of <span>2 3/8 x 1/3 will be found as follows:
We convert the first term into proper fraction
2 3/8=(2*8+3)/8=19/8
multiplying we get:
19/8</span>×1/3
=19/24
Answer:
Radius = 4.51
Step-by-step explanation:
Answer:
about 5.9%
Step-by-step explanation:
We assume that the original amount of Pb-210 present at death decays at the given rate. The fraction (f) remaining is multiplied by 1/2 every 22 years, so can be modeled by ...
f = (1/2)^(t/22) . . . . . where t is in years after death
Then, for t=90, the remaining fraction is ...
f = (1/2)^(90/22) ≈ 0.05868 ≈ 5.9%
