1.What value goes in the blank to make this a proportion: 1/2 = / 8

2.What value goes in the blank to make this a proportion:
17/5 = / 15

3.What value goes in the blank to make this a proportion:
/6 = 13 / 2

4.What value goes in the blank to make this a proportion:
/20 = 4 / 4

yeet

step-by-step explanation:

okay wait before i answer, is this for your points on a graph?

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)

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)