Answer:
Use demos or a graphing calc.
Step-by-step explanation:
What is the solution to the system of equations? 2x – y = 7 y = 2x + 3
1 answer:
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Answer:
Step-by-step explanation:
This is a good example of permutations. For the first slot on his shelf, Dylan has 7 trophies to choose from. Then 6, 5, and so on. Since he is only fitting 4 trophies on his shelf, we only continue until we have the slots filled. Thus, we have to do so.
*Note: We do not divide by because in this case, order matters. A different order of the same four books still produces different arrangements, so the order matters.