Final answer:
To find the product of -1.25 and 77.5, simply multiply the two numbers to get -96.875, following the rule regarding multiplication of numbers with opposite signs.
Step-by-step explanation:
The question involves multiplication of integers. The integers in question are -1.25 and 77.5. To solve this, multiply -1.25 by 77.5. When two numbers with opposite signs are multiplied, the result is negative. Thus:
-1.25 x 77.5 = -96.875
This operation follows the rule that when a positive number and a negative number are multiplied, the result is negative, which is an important concept in integer multiplication.