answer two questions about percentages and centimeters

label Calculus
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Jul 10th, 2015

Thank you for the opportunity to help you with your question!

Precentate usable=100- percentage filed

= 100-100(1-e^-.1t)=100e^-.1t
at t=6
percentage usable=100e^-.6=54.9percent


2nd

a

f(9)=220(1-0.943e^(-0.15x8))=157.35. rounding to the nearest whole number we get 157

b

find df(t)/ dt = 30.768*e (-4/25*t) 

then plug in t= 6 ==> 11.78 cm 

c

220cm

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 10th, 2015

hi my homework is saying the answer for b is wrong, could you find a more accurate solution

Jul 10th, 2015

calculation mistake if you have scientific calculator just place values i am at work and can,t find scientific calculator here so just roughly calculated


Jul 10th, 2015

ok i am going to repost it

Jul 10th, 2015

please its my first answer don,t give me negative review i work on it i am new here please

Jul 10th, 2015

ok i will leave a positive review but i want to re post it 

Jul 10th, 2015

yes you can but i am 100% sure about my work just calculation mistake 

please give me posative feedback 

thanks

Jul 10th, 2015

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