acavalieri72
20.08.2021 •
Mathematics
Which is the best estimate of - 15/16 + (- 1/2)?
A. -1 1/2
B.-1/2
C.1/2
D.1 1/2
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Ответ:
MK = MN + (-KN) = MN - KN = 9x - 11 - x - 3 = 8x - 14
Since LK = MK and LK = 7x - 10, then
7x - 10 = 8x - 14
8x - 7x = -10 + 14
x = 4
LJ = MK + KJ
MK = LK = 7x - 10 = 7(4) - 10 = 28 - 10 = 18
LJ = 18 + 28 = 46