28. Which of the following can be the sides of a right triangle? c. 2V3, V16, 30 a. 5V3, 3V5, 60 b. 15, 20, 25 d. 4, 6, 9

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.2: The Law Of Cosines
Problem 3E
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Answer the number 28

varies inversely as y and x = 6 when y = 3, what is y when x is 9?
a. 6
b. 2
c. 4
d. 8
26. Determine which statement is always true?
a. A kite has congruent diagonals.
b. A kite has perpendicular diagonals.
c. A kite has 2 pair of parallel sides.
d. A kite has diagonals that bisect each othe
27. In 16:4 = x: 2, find x.
a. 8
b. 6
c. 4
d. 2
28. Which of the following can be the sides of a right triangle?
b. 15, 20, 25
29. Which of the following formulas shows the Law of Cosines?
a. 5V3, 3V5, 60
c. 2v3, V16, 30
d. 4, 6, 9
a. c = a? + b² – 4ac + cos A
b. c2 = a? -b2 - 2abcosC
30. Which of these triangles is not an oblique triangle?
c. c a2 + b2- 2abcosC
d. (cos A)/a (cosB)/b
P.S
%3D
a. Scalene Triangle
b. Obtuse Triangle
c. Right Triangle
d. Equilateral Triangle
31. Solve the quadratic equation x2-x-20 0 by factoring.
c. -4 and 5
a. 4 and 5
b. 4 and -5
d. -4 and -5
32. The length of the garden is 5 meters longer than its width and the area is 14 m2. How long is the garden?
с. 5m
a. 9m
b. 7m
d. 2m
33. Ify varies inversely as x and y 8 when x = 2, which is the correct way to solve for the constant of the
variation?
%3D
b. y = kx
c. k =2
d. x = ky
a.
=y
34. Translate "The current (x) in a wire varies directly as the potential energy (P) and inversely as the square
of its diameter (d)" to variation equation.
kd
C. X=
kP
d. x=
d2
b. P= kxd
a. x = kPn
35. By identifying the constant of variation of m to n, which will complete the table?
m 20 40 60 80 100
10 20
40 50
d. 90
b. 30
с. 120
a. 60
Transcribed Image Text:varies inversely as y and x = 6 when y = 3, what is y when x is 9? a. 6 b. 2 c. 4 d. 8 26. Determine which statement is always true? a. A kite has congruent diagonals. b. A kite has perpendicular diagonals. c. A kite has 2 pair of parallel sides. d. A kite has diagonals that bisect each othe 27. In 16:4 = x: 2, find x. a. 8 b. 6 c. 4 d. 2 28. Which of the following can be the sides of a right triangle? b. 15, 20, 25 29. Which of the following formulas shows the Law of Cosines? a. 5V3, 3V5, 60 c. 2v3, V16, 30 d. 4, 6, 9 a. c = a? + b² – 4ac + cos A b. c2 = a? -b2 - 2abcosC 30. Which of these triangles is not an oblique triangle? c. c a2 + b2- 2abcosC d. (cos A)/a (cosB)/b P.S %3D a. Scalene Triangle b. Obtuse Triangle c. Right Triangle d. Equilateral Triangle 31. Solve the quadratic equation x2-x-20 0 by factoring. c. -4 and 5 a. 4 and 5 b. 4 and -5 d. -4 and -5 32. The length of the garden is 5 meters longer than its width and the area is 14 m2. How long is the garden? с. 5m a. 9m b. 7m d. 2m 33. Ify varies inversely as x and y 8 when x = 2, which is the correct way to solve for the constant of the variation? %3D b. y = kx c. k =2 d. x = ky a. =y 34. Translate "The current (x) in a wire varies directly as the potential energy (P) and inversely as the square of its diameter (d)" to variation equation. kd C. X= kP d. x= d2 b. P= kxd a. x = kPn 35. By identifying the constant of variation of m to n, which will complete the table? m 20 40 60 80 100 10 20 40 50 d. 90 b. 30 с. 120 a. 60
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