The formula for half-life is:

A is the amount remaining, P is the initial amount, t is the time that has passed, and h is the half-life of the substance. Plug in the values that you know and solve:

Rounded to the nearest whole number, the density of the substance was about 13<span>mg / cm².</span>
Answer:
she can walk 2 miles mph
Step-by-step explanation:
because 80 ÷8=10
16÷8=2
Answer:
$20
Step-by-step explanation:
25 x (20/100) = 5
25 - 5 = 20
c
Step-by-step explanation:
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