If 5−x>1+5x and 5−3x≥2−4x, then x can take which of the following values?
- A1
- B2
- C-2
- D-4
Solution & Step-by-step Explanation
Let's solve both linear inequalities independently.
First Inequality:
5−x>1+5x
Move x terms to one side and constants to the other:
5−1>5x+x
4>6x
x<
6
4
⟹x<
3
2
≈0.67
Second Inequality:
5−3x≥2−4x
Move x terms to one side and constants to the other:
−3x+4x≥2−5
x≥−3
Combining both conditions:
−3≤x<
3
2
Let's check the given options to see which value falls in the interval [−3,0.67):
A) 1 (Incorrect, 1>0.67)
B) 2 (Incorrect, 2>0.67)
C) −2 (Correct, −3≤−2<0.67)
D) −4 (Incorrect, −4<−3)
Therefore, x can take the value −2.
First Inequality:
5−x>1+5x
Move x terms to one side and constants to the other:
5−1>5x+x
4>6x
x<
6
4
⟹x<
3
2
≈0.67
Second Inequality:
5−3x≥2−4x
Move x terms to one side and constants to the other:
−3x+4x≥2−5
x≥−3
Combining both conditions:
−3≤x<
3
2
Let's check the given options to see which value falls in the interval [−3,0.67):
A) 1 (Incorrect, 1>0.67)
B) 2 (Incorrect, 2>0.67)
C) −2 (Correct, −3≤−2<0.67)
D) −4 (Incorrect, −4<−3)
Therefore, x can take the value −2.