Answer: I do not understand the options you gave but but cos30º is equal to 
/2 which is 0.86602540378.
Answer:
113 feet
Step-by-step explanation:
I will assume you meant h = -4.9t^2 + 135; "t2" is incorrect.
To answer this question, to find the height of the ball after 2.1 seconds, substitute 2.1 for t in the above equation:
h(2.1) = -4.9(2.1)^2 + 135. This becomes -21.6 + 135, or 113.4.
The closest result to the height of the ball after 2.1 seconds is 113 feet.
Answer:
The third, they are equivalent because the size of the shaded area is the same.
Answer:
Can you give me the choices for each of these, I'm not sure how they might phrase it.
