Answer:
C. 0
Step-by-step explanation:
When adding a negative number, you are just subtracting
So, 8 - 8=0
Answer: 56=4d
Explanation:
Dorothy is 14
6*2 = 12
12/2 = 6
So, the answer could be 12/2
The standard form is 21x-y-7=0
Answer:
2cosAcos2A, 4sinAcos^2A
Step-by-step explanation:
cos3A+cosA
2cos((3A+A)/2)cos((3A-A)/2)
2cos(4A/2)cos(2A/2)
2cosAcos2A
sin3A+sinA
2sin((3A+A)/2)cos((3A-A)/2)
2sin(4A/2)cos(2A/2)
2sin2AcosA
4sinAcos^2A
