I believe the answer is 26. But I’m new to this I just learned this last week.
80% of 20 is 80/100 x 20 = 16
So, kelly has used 16 stamps, and has 4 left
475.82
is the answr i think
Answer:
1. 3(9K-2)
2. 5(x+12y)
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
(2x + 1)² = x² + (2x - 1)² = x² + (2x - 1)(2x - 1)
(2x + 1)(2x + 1) = x² + 4x²-2x-2x+1
4x²+2x+2x+1 = 5x²-4x+1
4x²+4x+1 = 5x²-4x+1
0= 5x²-4x²-4x-4x+1-1
0= x²-8x
x²-8x=0
x²=8x
x=8
