Answer:
The substance half-life is of 4.98 days.
Step-by-step explanation:
Equation for an amount of a decaying substance:
The equation for the amount of a substance that decay exponentially has the following format:
In which k is the decay rate, as a decimal.
k-value of 0.1392.
This means that:
Find the substance's half life, in days.
This is t for which 
. So
The substance half-life is of 4.98 days.
Answer:
a) 5
b) 20
c) 28
d) 10
Step-by-step explanation:
a) 7-2=5
b) 2(7)+3(2)
= 14+6
= 20
c) 2(7)(3)= 28
d) (7-2)^2
= (14-4)
= 10
Answer:
22 days
Step-by-step explanation:
55 divided by 2.5=22 days
Step-by-step explanation:
she hopped 10560 MI to the lake because the remaining miles was the 7040 miles without her baby and if you do 7040 (the 2/3s) divided by 2 you would get 3520 which is the 1/3 of the distance to the lake so 7040 miles + 3520 miles equals 10560 miles hopped to the lake. Hope this helped ^_^
Step-by-step explanation:
-5=q+2
-5+2=q
q= -3
hope it helps.
