Answer:
Step-by-step explanation:
5
Answer:
X=9
Step-by-step explanation:
12+15=27
18+x=27
27-18=9
X=9
8 ÷ 10 = 0.8
So the unit rate would be 0.8
Hope it helps!
Answer:
4x² + 4x + 1
Step-by-step explanation:
We know that (a + b)² = a² + 2ab + b², therefore, (2x + 1)² = 4x² + 4x + 1.