The first one I think is B
Answer:
y≤2x+6
Step-by-step explanation:
Tell me if you need explanation. Please mark as brainliest
Answer:
85.55
Step-by-step explanation:
i dont know if im right but
1) i took 12 × $6.79 for the total cost ehich totalled out to 81.48
2) i used calcutator.net and put in the sales tax 5% ($4.07)
3) it gave me $85.55 after adding the tax
Answer with Explanation:
Keep in mind these trigonometric Identity:
1. Cos²x - Sin² x= Cos 2 x
2. Cos 2 x = 2 Cos²x-1
3. Cos 2 x = 1 - 2 Sin²x
Now, Coming to the Problem
1 + Cos (18 x)
= 1 + Cos (2 × 9 x)
= 2 Cos ² (9 x)→→→ Cos (2 × 9 x)= 2 Cos² (9 x) - 1