18. If logxy=5 and log3x=3/5,then find the value of 3y 48 O 36 O 81 O 27 4

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 74E
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95°F
Mostly sunny
17. A poster is on top of a building. Rajesh is standing on the ground at a distance of 50 m from the building. The angles of elevation to the top of the poster and bottom of
poster are 60 and 30° respectively. What is the ratio of height of the building to the height of the building excluding the poster?
3
50
28.86
O 1.732
18. If logxy=5 and log3x=3/5,then find the value of 3y
48
36
81
O27
19. If the Arithmetic mean of 5, 5, 12, x and 15 is 10, then the value of x is
O 16
12
O 15
O 13
20. If a*b = 5a+2b, then the value of 2*3 + 3*4 is
A
Transcribed Image Text:95°F Mostly sunny 17. A poster is on top of a building. Rajesh is standing on the ground at a distance of 50 m from the building. The angles of elevation to the top of the poster and bottom of poster are 60 and 30° respectively. What is the ratio of height of the building to the height of the building excluding the poster? 3 50 28.86 O 1.732 18. If logxy=5 and log3x=3/5,then find the value of 3y 48 36 81 O27 19. If the Arithmetic mean of 5, 5, 12, x and 15 is 10, then the value of x is O 16 12 O 15 O 13 20. If a*b = 5a+2b, then the value of 2*3 + 3*4 is A
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