8-5=-3 It's negative 3 because the 8 is greater than 5
Cos -2x or -cos2x, it's the difference.
Answer: 
Step-by-step explanation:
Given
The length of each cube is 
If there are 6 cubes placed over each other, then the height achieved by the cubes is
C. 96 students will not prefer math or language arts
The answer to number 18 is - 0.25 or 1/4
If you need help with the other ones ask.
<em>Hope this will help :)</em>