Which of the following ratios is not equivalent to start fraction 4 over 8 end fraction ?
A. one-half
B. two-fourths
C. Start Fraction 20 over 45 End Fraction
D. Start Fraction 12 over 24 End Fraction
C. Start Fraction 20 over 45 End Fraction.
To simplify Start Fraction 4 over 8 End Fraction, we can divide both the numerator and denominator by 4:
Start Fraction 4 over 8 End Fraction = Start Fraction 1 over 2 End Fraction
Therefore, the ratios that are equivalent to Start Fraction 4 over 8 End Fraction are:
A. One-half (since we just simplified the original ratio to this)
B. Two-fourths can also be simplified by dividing both the numerator and denominator by 2: Start Fraction 2 over 4 End Fraction = Start Fraction 1 over 2 End Fraction
D. Start Fraction 12 over 24 End Fraction can also be simplified by dividing both the numerator and denominator by 12: Start Fraction 12 over 24 End Fraction = Start Fraction 1 over 2 End Fraction
However, Start Fraction 20 over 45 End Fraction cannot be simplified to Start Fraction 1 over 2 End Fraction, so it is not equivalent to Start Fraction 4 over 8 End Fraction.