Answer: A
Step-by-step explanation:

Answer:
-1/root2
Step-by-step explanation:
7pi/4 radians is the same as -pi/4 radians
sin(-pi/4) is -sin(pi/4) = -1/root2
Answer:
Written in standard ratio form-
5.478 : 7.522
other ways of expressing it-
5.478/7.522 or
5.478 to 7.522
Simplified-
0.72826..... as an irrational number
There are 12 squares in each 4 x 3 grid.
25% of 12 = 3
This means that there should be 3 shaded squares in the grid.
Your answer is B. because it has 3 shaded squares.