5 2/3 - 2 1/4 = ?
Reduce all fractions to their simplest forms. Convert all improper fractions to mixed numbers. Provide answers in the following format:
Fraction: 3/4
Mixed number: 1 5/8
ANS: 3 5/12
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Shifting cultivation is characterized by:
A) an agroforestry system emphasizing intermixing of food crops and woody species. B) shifting from one food crop to another in alternate years. C) the shifting of land management of a given area from one farmer to another. D) alternating 2-3 years' food crop production with a much longer period of fallow. E) cutting and burning of woody species to reduce the C/N ratio of the crop residues.
All of the following statements are true EXCEPT:
A. Refrigerant R-1234yf is flammable. B. Refrigerant R-13a is flammable. C. Contact with refrigerant vapor can cause frostbite. D. Coolant cannot be drained into the shop drain system.
In the system in Figure E-2, xt(t) = sinc(t), f c = 10 and the cutoff frequency of the lowpass filter is 1 Hz. Graph the signals xt(t), y t (t), yd(t) and yf(t) and the magnitudes and phases of their CTFTs.
When soldering, flux should be applied to ____.
A. the male part of the joint only B. the female part of the joint only C. both the male and female parts of the joint D. none of the above