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15. Welders use a logarithmic scale to identify protective eyewear. The shade number, n, is given by the equation n = 1 7log T 3 where T is the fraction of visible light that the glass transmits. What shade number should a welder use that will only transmit % of the light entering the glass?

15. Welders use a logarithmic scale to identify protective eyewear. The shade number, n, is given by the equation n = 1 7log T 3 where T is the fraction of visible light that the glass transmits. What shade number should a welder use that will only transmit % of the light entering the glass?

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 54E
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15. Welders use a logarithmic scale to identify protective eyewear. The shade number, n, is given by the equation n = 1 7log T 3 where T is the fraction of visible light that the glass transmits. What shade number should a welder use that will only transmit % of the light entering the glass?
Transcribed Image Text:15. Welders use a logarithmic scale to identify protective eyewear. The shade number, n, is given by the equation n = 1 7log T 3 where T is the fraction of visible light that the glass transmits. What shade number should a welder use that will only transmit % of the light entering the glass?
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