How to find a common denominator in fractions

Step-by-step explanation:

A way you can find common denominators are like say you have a fraction, 2/3 and want to find a fraction equivalent to that, or common factors, you can multiply both the numerator and denominator by the same number. So if I have 2/3 and want a denominator or 9, I can do 2/3 times 3/3 and get 6/9 which is the same as 2/3. If you need anymore help or this is not the answer you wanted, just tell meh

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice