D. 117 min.
You take 18 minutes and divide it by 10 pages, and it should give you 1.8 minutes, You take that and multiply it by 65, and you should get 117 minutes
Answer:
x=πn, n∈Z
Step-by-step explanation:
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;
the solution is (0, 2). 3. 3x + y = 6. 4x + 2y = 8.