100=x^2+y^2
0=3x+4y

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1. 100=x^2+y^2 Look at the picture

2. 0=3x+4y Look at the picture

Step-by-step explanation: Hope this help :D

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)

the answer is: the length is 5/6 yards.

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step-by-step explanation: