, 24.01.2020roscoe53

# What is the answer to 400/(1+e^-x)=350 anrs14

the answer is 1030 it's very simple math. Ideen

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this you! diontna29
400/(1+e^-x)=350
400=350(1+e^-x)
400=350+350e^-x
350e^-x=400-350
350e^-x=50
e^-x=50/350
e^-x=1/7
ln e^-x=ln (1/7)
-x ^(ln e)=ln1-ln7
-x(1)=0-ln7
x=ln7

x= ln 7  ≈1.94591...  ### Other questions on the subject: Mathematics  Mathematics, 21.06.2019, hannamcbrayer1
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