A researcher is investigating whether a difference exists in the mean weight of green-striped watermelons grown on two different
farms: one that uses organic methods and one that uses non-organic methods. The mean and standard deviation of the weights in a random sample of 43 watermelons from the organic farm were 18 pounds and 2 pounds, respectively. The mean and standard deviation of the weights in a random sample of 40 watermelons from the non-organic farm were 20 pounds and 1.7 pounds, respectively.Which of the following represents the standard error of the difference in the mean weights of watermelons from the two farms? a. 2+1.7b. 
c. 
d. 
e. 
1 answer:
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Answer:
The value of x is hours.
Step-by-step explanation:
Machine A = 5 hours
Machine B = x hours
Machine A and B = 2 hours
Using the formula:
where:
T is the time spend by both machine
A is the time spend by machine A
B is the time spend by machine B
Let multiply the entire problem by the common denominator (5B)
2x + 10 = 5x
Collect the like terms
10 = 5x - 2x
10 = 3x
3x = 10
Divide both side by the coefficient of x (3)
hours.
Therefore, Machine B will fill the same lot in hours.
Answer:
There were 6 onion rings and 2 slider in the combination meal.
Step-by-step explanation:
Let x be the number of onion rings and y be the number of slider.
Calories in one onion ring = 45 calories
Calories in one slider = 325 calories
Total number of calories = 920
Thus, we can write the equation:
There are 3 times as many onion rings as the sliders.
Thus, we can write the equation:
Solving the two equation by substitution method, we get,
Thus, there were 6 onion rings and 2 slider in the combination meal.