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parazit0011
@parazit0011
August 2022
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помогите!!!!!!!!!!!!!
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andrisd
Verified answer
У=-5х+15
1) у>0
-5x+15>0
-5x>-15
x<3
x∈(-∞;3)
2) y<0
-5x+15<0
-5x<-15
x>3
x∈(3;+∞)
3) -5x+15≥-15
-5x≥-30
x≤6
(-∞;-6]
4) -5x+15≤25
-5x≤10
x≤-2
x∈(-∞;-2]
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Answers & Comments
Verified answer
У=-5х+151) у>0
-5x+15>0
-5x>-15
x<3
x∈(-∞;3)
2) y<0
-5x+15<0
-5x<-15
x>3
x∈(3;+∞)
3) -5x+15≥-15
-5x≥-30
x≤6
(-∞;-6]
4) -5x+15≤25
-5x≤10
x≤-2
x∈(-∞;-2]