Final answer:
The expression equivalent to -3/8 over -1/4 is 1.5 when we multiply -3/8 by the reciprocal of -1/4, which simplifies to 3/2 and is equal to 1.5.
Step-by-step explanation:
To find which expression is equivalent to -3/8 over -1/4, also known as -3/8 divided by -1/4, we need to multiply the first fraction, -3/8, by the reciprocal of the second fraction, which is -4/1 because dividing by a fraction is the same as multiplying by its reciprocal.
Let's perform the multiplication step-by-step:
- Multiply the numerators: -3 × -4 = 12.
- Multiply the denominators: 8 × 1 = 8.
- Combine the results: 12 over 8, which simplifies to 3 over 2 after dividing both numerator and denominator by 4.
- As a decimal, 3 over 2 is equivalent to 1.5.
Thus, the expression equivalent to -3/8 over -1/4 is 1.5, and the correct answer is C.