Solve.The inequality |x - 21.6| ? 0.4 describes the range of acceptable lengths x, in centimeters, of a certain metal rod used in a manufacturing process. Solve the inequality and interpret the solution.
A. 
; the length of the metal rod is acceptable between a low of 22 cm and a high of 22.4 cm.
B. 
; the length of the metal rod is acceptable between a low of 21.2 cm and a high of 22 cm.
C. (-?, 
? 
?); the length of the metal rod is acceptable at or below 21.2 cm and at or above 22 cm.
D. (-?, 
? 
?); the length of the metal rod is acceptable at or below 22 cm and at or above 22.4 cm.
Answer: B
You might also like to view...
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = 5x8 + 2x6 + 8x4 + 8x2 + 3
A. 0 positive; 0 or 2 negative B. 0 positive; 0 negative C. 0 or 2 positive; 0 negative D. 4 positive; 0 negative
Identify the equation as an identity, contradiction, or conditional equation.7x + 6(3x - 4) = 5 - 4x
A. contradiction B. identity C. conditional equation
Solve quadratic equation by factoring.30x2 + 22x + 4 = 0
A. 
, 
B. - 3, - 
C. - 
, - 
D. 3, 
Factor.x2 - 9x + 18
A. (x + 6)(x - 3) B. (x - 6)(x + 3) C. (x + 6)(x + 3) D. (x - 6)(x - 3)