Answer:
square
Step-by-step explanation:
all sides have the same length 
all vertices form 90 degree angles
Answer:
16. 5/3
Step-by-step explanation:
let the no of tranquilizer be x
therefore
5/4 + x =18
x= 18-5/4
= 16 5/3
Answer:
Step-by-step explanation:
8x² + 2(x²-1) = 8x² + 2*x² - 2*1
= 8x² + 2x² -2
= 10x² -2
Like terms: 8x² , 2x²
5(7y + 2)
Distribute (multiply) the 2 to the numbers in the parentheses.
35y + 10