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14.04.2020 •
Mathematics
If a quadrilateral has perpendicular diagonals, then it is a rectangle.
Which of the following arguments is valid with respect to the conditional statement premise above?
1. A quadrilateral is a rectangle.
Therefore, it has perpendicular diagonals.
2. A quadrilateral does not have perpendicular diagonals.
Therefore, it is not a rectangle.
3. A quadrilateral has perpendicular diagonals.
Therefore, it is a rectangle.
4. A quadrilateral is not a rectangle.
Therefore, it does not have perpendicular diagonals.
A. 3 and 4
B. 1 only
C. 1 and 3
D. None of the arguments are valid.
Solved
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Ответ:
Step-by-step explanation:
a) On day 4, her balance = $400
on day 5, her balance = $0
on day 6, her balance = $400
on day 7, her balance = $0
on day 8, her balance = $400
From the above illustration, Ebony withdraws all the money and deposits the same amount, each every other days.
c) I do not think so, perhaps, she must have been doing that previously, between day 4 and day 8, but have changed her way of withdrawals and savings between day 8 and day 12.