B^-2 / b^-3 = b^(-2-(-3) = b^1 = b
answer is d
Answer:
1. 3(9K-2)
2. 5(x+12y)
Step-by-step explanation:
Answer:
the lenght around an object
Step-by-step explanation:
20
Step-by-step explanation:
Step 1:
Let the number be 50 and to find 40% of 50 is given interms of expression as follows
To express the percentage the following strategy is used
Eg: 40% = 
∴ To express 40% of 50 is

Step 2:
On simplification the above expression we could get

= 20