Three points have coordinates A (0 , 7) , B (8 , 3) and C (3k , k)
2 answers:
9514 1404 393
Answer:
k = 2.8
Step-by-step explanation:
Segments AB and AC are on the same line, so have the same slope. Using the slope formula, we have ...
m = (y2 -y1)/(x2 -x1)
(3 -7)/(8 -0) = (k -7)/(3k -0)
Multiplying by 6k gives ...
-3k = 2(k -7)
-5k = -14 . . . . . . subtract 2k
k = 14/5 = 2.8 . . . . divide by -5
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Answer:
The conjecture is that the unit digit of 4^n = 4 when n = odd also 4^n = 6 when n = even
Step-by-step explanation:
The conjecture is that the unit digit of 4^n = 4 when n = odd also 4^n = 6 when n = even
To prove this conjecture
unit digit = 6
hence the property is true for ; n = 1 and n = 2 and also for every odd and even number ( i.e. from 1 to 8 )