what is the value of x?
a. 125
b. 40
c. 75
d. 55

D. 55

Step-by-step explanation:

First, you have to find the value of all the interior angles added together. There are 6 sides so you plug in 6 for the formula (n-2) x 180. the answer is 720. Now, add up all the interior angles shown and subtract it from 720. The answer is 125. This is the remaining interior angle and not x so you have to subtract 125 from 180. X = 55 degrees.

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)