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43 votes
43 votes
Someone please answer number 15, 17, 19, 21, 23, 25, 27

Someone please answer number 15, 17, 19, 21, 23, 25, 27-example-1
User Alex Kibler
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2.7k points

1 Answer

18 votes
18 votes

#15


\\ \bull\tt\dashrightarrow x+9>15


\\ \bull\tt\dashrightarrow x>15-9


\\ \bull\tt\dashrightarrow x>6

#17


\\ \bull\tt\dashrightarrow 5x+15\leqslant -10


\\ \bull\tt\dashrightarrow 5x\leqslant -10-15=-25


\\ \bull\tt\dashrightarrow x\leqslant \cfrac{-25}{5}


\\ \bull\tt\dashrightarrow x\leqslant -5

#19


\\ \bull\tt\dashrightarrow 6x\geqslant -0.3


\\ \bull\tt\dashrightarrow x\geqslant (-0.3)/(6)


\\ \bull\tt\dashrightarrow x\geqslant 0.05

#21


\\ \bull\tt\dashrightarrow (1)/(4)x>(1)/(2)


\\ \bull\tt\dashrightarrow x>(1)/(2)* 4


\\ \bull\tt\dashrightarrow x>2

#23


\\ \bull\tt\dashrightarrow 2.1x\geqslant 6.3


\\ \bull\tt\dashrightarrow x\geqslant (6.3)/(2.1)


\\ \bull\tt\dashrightarrow x\geqslant 3

User Lopez
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2.9k points