*perimeter *rectangle
it is polynomials. can you plz go step by step

I think it is 11.2          I solved it by trying to get the missing variable of the white rectangle then adding them together and I did that by this equation

2x+3=4x-5+x

2x+3= 5x-5

2x+8=5x

8=3x

so the missing side is 2.6

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)

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: