EXAMPLE 3 A wire takes the shape of a semicircle x2 + y2 = 9, y ≥ 0, and is thicker near its base than near the top. Find the center of mass of the wire if the linear density at any point is proportional to its distance from the line y = 4. SOLUTION As in this example we use the parametrization x = 3 cos(t), y = 3 sin(t), 0 ≤ t ≤ π, and find that ds = 3 dt. The linear density is rho(x, y) = k(4 − y)

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

step-by-step explanation:

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