13 + 21 = 13- -21
The minus sign and negative cancel each other out.
9 is the answer negatives cancel out creating positve
Answer:
225 cubic centimeters
Step-by-step explanation:
Volume = LWH
15*5*3 = 15*15 = 225
Answer:

Step-by-step explanation:
Given


Required

This is calculated as the number of women divided by the population of the class
i.e.

So, we have:


Answer:
3.5
Step-by-step explanation:
[(3 x 2) - 2 x 1.25] = [6 - 2 x 1.25]
= [6 - 2.5]
= 3.5