Answer: 19 + (-27)
Step-by-step explanation:
The general way to work this out is to solve the general expression for
the remaining quantity versus half-life, using logarithms. But that's not
necessary with these numbers.
Look at the numbers:
-- 3 mg is 1/4 of 12 mg.
-- 1/4 is the product of (1/2) x (1/2).
-- So the 3 mg is what's left of 12 mg after 2 half-lives.
The 26 minutes must be two half-lives.
-- The half-life of that substance is 26/2 = <em>13 minutes</em>.
Go Maggie !
The line of symmetry is at zero because the coordinates are X= -2 , X= 2
Answer: I think distributive
Step-by-step explanation:
Exact form: b= 22/5
Decimal form: b= 4.4
Mixed number form: b= 4 2/5
