The number of permutations of the 4 different letters, taken two at a time, is given by:
For the answer to the question above, Tim practices his backhand and his serve at least 2 hours each day this means X =< 2 ( less than or equal to 2 hrs). He works less on his backhand than his serve and practices his serve more than an hour daily. <span>Y < 1</span>
Answer:
Step-by-step explanation:
F(x) G(x)
Answer:
by gaining or losing electrons
Step-by-step explanation:
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