bm42400
08.02.2021 •
Mathematics
The numbers 1, 3, 6, 10, 15, ... are known as triangular numbers. Each triangular number can be expressed as (n(n+1))/2 where n is a natural number. The largest triangular number less than 500 is:
A) 16
B) 9
C) 8
D) 5
E) 3
Please include an explanation if you answer, thanks
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Ответ:
D
Step-by-step explanation:
For parallel lines, they have the same slope, but different y-intercepts.
x=-3 has a slope of 0 because it is a vertical line. Therefore, the slope of the line that is parallel to is is also 0.