Answer:
77
Step-by-step explanation:
84/12=7
so
7*11= 77
b. cos²3x - sin²3x = cos6x
if its wrong sorry
hope this helps you☺️☺️
Answer: 3.50x + 4.00y ≤ 45
0 < y < 11.25
<u>Step-by-step explanation:</u>
12.3 - 7.9x
8.9 - 1.4x + (-6.5) +3.4
12.3 - 1.4x - 6.5=