Two planets follow a circular orbit around a central star in the same plane. The distance between the star at point S and one planet at point A is 135 million miles. The distance between the star and the other planet at point B is 100 million miles. If an observer on the first planet at point A sights the second planet such that ∠ S A B = 42 ° find the distance between the planets. Round to the nearest million miles.
Two planets follow a circular orbit around a central star in the same plane. The distance between the star at point S and one planet at point A is 135 million miles. The distance between the star and the other planet at point B is 100 million miles. If an observer on the first planet at point A sights the second planet such that ∠ S A B = 42 ° find the distance between the planets. Round to the nearest million miles.
Solution Summary: The author calculates the distance between both the planets by drawing a rough sketch for the conditions and labeling the sides and angles.
Two planets follow a circular orbit around a central star in the same plane. The distance between the star at point
S
and one planet at point
A
is
135
million miles. The distance between the star and the other planet at point
B
is
100
million miles. If an observer on the first planet at point
A
sights the second planet such that
∠
S
A
B
=
42
°
find the distance between the planets. Round to the nearest million miles.
The graph of the function f in the figure below consists of line segments and a quarter of a circle. Let g be the function given by
x
g(x) = __ f (t)dt. Determine all values of a, if any, where g has a point of inflection on the open interval (-9, 9).
8
y
7
76
LO
5
4
3
2
1
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
1
2 3
♡.
-1
-2
3
-4
56
-5
-6
-7
-8
Graph of f
4 5
16
7
8
9 10
The areas of the regions bounded by the graph of the function f and the x-axis are labeled in the figure below. Let the function g be
C
defined by the equation g(x) = [* f(t)dt. What is the maximum value of the function g on the closed interval [-7, 8]?
17
y
Graph of f
00
8
76
5
4
3
2
1
-10 -9 -8 -7 -6 -5 -4 -3-2-1
-2
702
4
1
21
3 4
568
-4
-5
--6
-7
-8
x
5
6
7
8
9 10
17
A tank holds a 135 gal solution of water and salt. Initially, the solution contains 21 lb of salt. A salt solution with a concentration of 3 lb of salt per gal begins flowing into the tank at the rate of 3 gal per
minute. The solution in the tank also begins flowing out at a rate of 3 gal per minute. Let y be the amount of salt present in the tank at time t.
(a) Find an expression for the amount of salt in the tank at any time.
(b) How much salt is present after 51 minutes?
(c) As time increases, what happens to the salt concentration?
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