Answer:
66%, 69%, 72%
63%, 65%, 67%
67%, 72%, 77%
Step-by-step explanation:
it says that people recommend the same intensity for three then increasing for three then decreasing thus repeating this cycle
so anyways for the fourth fifthe and sixth visit itll be an increasing sensitivity
m<6.5 & m<3 I just solved it so I hope I helped answering that question
Your procedure is perfect, you're fine, however, bear in mind that, in a calculator when plugging in values for some functions, specially trigonometric ones, if you tell it cos(40), and the calculator is in Radian mode, it thinks you meant cosine of 40 radian units, if you give it cos(40) and it's in Degree mode, it thinks you meant 40°, and 40 radians is hugely different than 40°.
so, make sure your calculator is in Degree mode, as you'd have guessed, it isn't.
Answer:
The midpoint M is (5,7)
Step-by-step explanation:

U(8,9)
V(2,5)
m = [(8+2)/2 , (9+5)/2]
= [(10/2) , (14/2)]
= (5,7)
(Correct me if i am wrong)