Madelyn is running for seventh grade class president. sixty students were randomly chosen to take a survey asking if they planned on voting for Madelyn. fifteen students said they plan on voting for her. there are a total of 140 seventh grade students. based on the survey how many people will likely vote for Madelyn A.35
B.70
C.215
D.4

55

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)

300pi

step-by-step explanation: