T = 12 min, T o = 80° C, T s = 50 °C, T ( 12 ) = 60° C
60 = 50 + ( 80 - 50 ) · e^(-12k)
10 = 30 · e^(-12k)
e^(-12k) = 0.3333...
ln ( 0.333.. ) = - 12 k
- 12 k = - 1.1
k = ( - 1.1 ) : ( - 12 ) = 0.0916
Answer: D ) 0.0916
Answer:
-12k+3
Step-by-step explanation:
(-11k+1)+(-1k+2)
Answer:
x = (cy+b)/a
Step-by-step explanation:
ax-b=cy
Add b to each side
ax-b+b=cy+b
ax = cy +b
Divide each side by a
ax/a = (cy+b)/a
x = (cy+b)/a
Answer:
answer is 107 degrees
Step-by-step explanation:
Given is a picture of triangle with vertices D, E and F
Given that exterior angle of F = 135 degrees
Hence interior angle of F =
Angle D = 28 degrees
Hence angle E =

Hence answer is 107 degrees