Final answer:
To represent the praying mantis's length as a mixed number, separate the decimal into a whole number and fraction: 10.5 cm is 10 1/2 cm.
Step-by-step explanation:
The question is asking for the representation of the length of a praying mantis in mixed numbers. To convert the decimal measurement of 10.5 centimeters to a mixed number, you separate the whole number from the fractional part. In this case, 10 is the whole number, and 0.5 is the fractional part, which can also be written as ½. Therefore, the length of the praying mantis as a mixed number is 10 ½ centimeters.