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>
I don’t know too can someone help me as welll???
1 1/10 because 12 tenths plus 9 tenths is 21 tenths then u divide
Will you do PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)
Answer: 13 CDs
Answer:
70
Step-by-step explanation:
she burns 250 calories per hour .to burn 3500 calories and shed 1 pound she has to work 14 hours and to shed 5 pounds she has to work 14×5=70 hours