A pentagon has four given angles: 50 degrees, 110 degrees, 120 degrees, and 160 degrees. What is the measure of the fifth angle? 140
130
90
100

its 100°

Step-by-step explanation:

The sum of the angles in a pentagon equal 540 degrees.

so

the fifth angle is

= (540 - 50 - 110 - 120 -160)°

= 100°

hope it helps :)

ok

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)