PROMASTER
09.12.2020 •
Mathematics
What would the total be for a customer at a store that charges 8% sales tax for the following priced items? $11.50, $12.25, $9.00
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Ответ:
The correct option is (C) a right triangle.
Step-by-step explanation: The given co-ordinates of a polygon are A(2, 1), B(7, 1), C(2, 4).
We are to select the correct type of the polygon.
Since we have the co-ordinates of the three points A, B and C, so the polygon will surely be a triangle.
Now, the lengths of the three sides AB, BC and CA of ΔABC can be calculated using distance formula as follows :
We have
This implies that
which is the Pythagorean triple. Hence, triangle ABC is a right-angled triangle.
Thus, (C) is the correct option.