Answer:
median is the best measure
Step-by-step explanation:
center = center position
-> median is the best measure
The Pythagorean theorem tells you ...
... c² = a² + b²
... 13² = 12² + b² . . . . . fill in the given numbers
... 169 - 144 = b² . . . . .subtract 12²
... √25 = b . . . . . . . . . take the square root
... b = 5 . . . . . . The value of b you're looking for.
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The numbers {5, 12, 13} make what is called a "Pythagorean triple" a set of integers that satisfies the relation of the Pythagorean theorem. These, and the triple {3, 4, 5} are often seen in algebra problems. It can be worthwhile to remember these numbers.
It is A because she can not have 125 in her account at the beggining of the month and end with 170 at the end of the month if she spends money.
B and C all make logical sense of her bank account decreasing over the month.
