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rectangle a′b′c′d′ is a dilation of rectangle abcd . what is the scale factor?

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4

Step-by-step explanation:

the answer is 4 because its a dilation:

you divide 8 and 2 which gives you 4

then 4 and 16 which also gives you 4

hope that helped you understand  

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)

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.