Answer:

Step-by-step explanation:
Given


Required

This is already stated in the question as:

Answer:
D
Step-by-step explanation:
x/(x²+3x+2) - 1/[(x+2)(x+1)]
x² + 3x + 2 = x² + 2x + x + 2
= x(x + 2) + (x + 2)
= (x + 2)(x + 1)
= x/[(x+2)(x+1)] - 1/[(x+2)(x+1)]
= (x-1)/[(x+2)(x+1)]
= (x-1)/(x²+3x+2)
Answer:
There are 20 boys
Step-by-step explanation:
Answer:
9, 7, -1, -2
Step-by-step explanation:
-2 is smaller than -1
Answer:
20%
Step-by-step explanation:
2:10 = 2/10. 2/10 = 20/100, which equals 20%.