Answer:
1.91 Ohms
Step-by-step explanation:
It is given that the resistance of the conductor is 3.18 Ohms/1000 feet.
It means that the resistance of the 1000-foot conductor is 3.18 Ohms.
So, the resistance of the 600-foot #12 (solid) aluminium conductor is 
= 6 × 0.318
= 1.908
= 1.91 Ohms (rounded to two decimal places)
Don't know whether or not you've encountered differential equations yet, but will try that approach here.
The growth rate is dy/dt = ky (which states that the rate is proportional to the size of the population, y, and k is a constant.
Grouping like terms,
dy
--- = kt, so y = Ne^kt
y
We are told that at t=0, there are 880 bacteria. Thus, 880=N. Therefore,
y = 880e^(kt). After 5 hours the pop will be 4400; using this info, find k:
4400=880e^(5k), or 5 = e^(5k). So, our y = 880e^(kt) becomes
y = 880e^(5t).
What will be the pop after 2 hours? y(2)=880e^(10) = 880(22026) =
approx. 19,383,290 bacteria
Time to reach a pop of 2550? 2550 = 880e^(5t). Find t.
ln 2550 = ln 880 + 5t, so ln 2550 - ln 880 = 5t. Divide both sides by 5 to obtain this time, t.
The right answer is Option C.
Step-by-step explanation:
Given,
Diameter = 6 cm
Radius = 
Height = 8 cm
π = 
Surface area = 2πrh+2πr²
Surface area = 
Surface area = 
Surface area = 
Surface area = 207.4 cm²
Rounding off to nearest whole number
Surface area = 207 cm²
The surface area of cylinder is 207cm².
The right answer is Option C.
Keywords: surface area, cylinder
Learn more about cylinder at:
#LearnwithBrainly
(2x+7)+(3x+58)=90
5x+65=90
5x=25
x=5
<span>70 inches is right-josh
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