D is the best answer :) good luck
Answer:
Probability of tractor do not start = 7.67%
Explanation:
Given data:
Probability of not start at red = 6%
Probability of not start at white = 11%
Probability of not start at Blue = 8%
Percentage of tractors produced in red line = 48%
Percentage of tractors produced in white line = 31%
hence Percentage of tractors produced in white line = 1 - 0.48 - 0.31 = 0.21
Probability of tractor do not start 
Probability of tractor do not start = 0.0288 + 0.0231 + 0.0248 = 0.0767
Probability of tractor do not start = 7.67%
I believe the answer is B. to help former addicts learn to live without drugs.
Hope this helped!
<em>-Oliver</em>
Because calorimetry is used to degree the heat of a reaction, it is a vital part of thermodynamics. With the intention to measure the heat of a response, the reaction must be removed so that no heat is misplaced to the surroundings. This is accomplished by means of the use of a calorimeter, which insulates the response to better include heat.
Consistent with the first law of Thermodynamics, the energies of the system and environment can exchange simplest in the event that they change electricity with every different. accordingly, if the electricity of 1 increases, the strength of the opposite decreases with the aid of the equal quantity, or vice versa, preserving constant overall energy.
A calorimeter is a device used to degree the amount of heat involved in a chemical or physical process. for instance, whilst an exothermic response happens in solution in a calorimeter, the heat produced by way of the reaction is absorbed by the solution, which increases its temperature.
Learn more about calorimeter here: brainly.com/question/24167789
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