1/4x+7greater than or equal to -2?
回答 (7)
✔ 最佳答案
1/4x + 7 >= -2
1/4x >= -9
x >= -36
1/4x + 7 >= -2
1/4x >= -9
x >= -36
Assume you mean :-
(1/4) x + 7 ⥠-2
(1/4) x ⥠- 9
x ⥠- 36
PS
Remember to use brackets. The question you presented may be read in a number of ways due to lack of brackets.
Could have been taken as :-
1 / (4x + 7) ⥠-2
OR
1 / (4x) + 7 ⥠-2
1/(4x + 7) ⧠-2
1 ⧠-2(4x + 7)
1 ⧠-2*4x - 2*7
1 ⧠-8x - 14
8x ⧠-1 - 14
8x ⧠-15
x ⧠-15/8 (-1.875)
x is greater than or equal to -36
1/4 x + 7 >= -2
1/4 x >= -9
x >= -36
So x is greater than or equal to -36
收錄日期: 2021-05-01 10:45:55
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