Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three times the amount of apps as theiss, how many apps does braylen have? let b represent the number of braylen’s apps and t represent the number of theiss’s apps.

use tape diagrams to solve the problem.

15 apps

Step-by-step explanation:

Carli has 90 apps on her phone

carli=90

Carli has three times the amount of apps as Theiss

t=90/3=30

Braylen has half the amount of apps as Theiss.

b=t/2=30/2=15

find out the value of b

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)