lfeliz
27.05.2020 •
Mathematics
If AC = 18, BC = 6x + 5 and AB = 5x +2 find BC
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Ответ:
BC = 11
Step-by-step explanation:
AC= AB + BC
18 =(5x + 2 ) + (6x+5)
18 = 11x + 7
18-7 = 11x
x = 11/ 11
x =1
BC =6x + 5 = 6*(1) + 5 = 11
Ответ:
4 2/15
Step-by-step explanation:
okay so let's first change 1/3 and 1/5 into the same fraction,
the common denominator, is 15
3 times 5, to get to fifteen,
so
5/15 and 3/15
minus eachother
2/15
6-2 is 4
4 2/15