5 mm
12 mm
-)) What is the length of the hypotenuse?

13

Step-by-step explanation:

a^2 + b^2 = c^2

5^2 + 12^2 + c^2

25 + 144 = c^2

169 = c^2  

Square root both sides

c = 13

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)