Câu nào không phải mệnh đề
A. 3+2=7
B. 4+x

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.