Answer:
The speed increases (45—>47—>49) then decreases (48—>47) over time.
Step-by-step explanation:
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Are you asking for the letter or what the line is called because if it's just the letter then it is r if it is the name then its a plane intersect.
Answer:
The motion of the particle describes an ellipse.
Step-by-step explanation:
The characteristics of the motion of the particle is derived by eliminating
in the parametric expressions. Since both expressions are based on trigonometric functions, we proceed to use the following trigonometric identity:
(1)
Where:
(2)
(3)
By (2) and (3) in (1):

(4)
The motion of the particle describes an ellipse.
Answer:
A & B
Step-by-step explanation:
A is spot-on because of the use of distributive property. B by the use of like terms.