The measure of an angle is 172.4°. What is the measure of its supplementary angle?

Step-by-step explanation:

in supplementary angle sum of two angle is always 180 degree.so,

let another angle be x

x+172.4=180

x=180-172.4

x=7.6

7.6

Step-by-step explanation:

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)