Câu 20. Phát biểu nào sau đây là đúng: A.
2 2
x y x y   
B.
 
2 2 2
x y x y   

C. x y   0 thì
x  0
hoặc
y  0 D.
x y   0
thì
xy  0

Acredit union pays 5% annual interest, compounded daily, on savings deposits. find the value after one year of $500 deposited in this account. $525.64 $25.64 $20.40 $520.40

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?