1. The numbers in the section to the right of the diagonal (white squares) are the same as in the section to the left of the diagonal. Or, in other words, the numbers in the darker shaded section are repeated in the lighter shaded section.
2. The 10 × table is just the 10s in order (10, 20, 30, 40 and so on).
3. The 5 × table has numbers ending in 5 and 0 alternately, while the first digit increases every 2 numbers.
4. The 9 × table has the units decreasing by 1 and the 10s increasing by 1 each time (up to 10 × 9).
5. The numbers in the 3 × table have the sum of their digits coming to 3, then 6, then 9. This pattern repeats throughout the table: e.g. 12: 1 + 2 = 3; 15: 1 + 5 = 6, 18: 1 + 8 = 9.
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Answer: -1.5
Step-by-step explanation:
<h3>
Answers: PA and PC</h3>
Explanation:
Segments PB, PA and PC are all radii of the same circle. We call this circle the circumcircle, with point P as the center of this circle.
To determine the location of P, we construct at least two perpendicular bisectors as the diagram shows. Segments PR, PS and PT are perpendicular bisectors of AB, AC, and BC in that order.