Refer to the diagram below for questions 5 and 6. 5. 4 and 28 are a pair of angles. 6. In order for line j to be parallel to line k, and m2 = (2x + 20) °, m26 = (4x – 6) °, what must x equal?
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Since you have submitted three questions, we'll answer the first question.
For the other questions please submit the questions again and specify it.
Note that are corresponding angles.
If j and k are parallel lines then have to be of equal measure.
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