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A hot metal plate at a temperature of (90+D) C is placed in a room at a constant temperature of (20+ D) C. After 20 minutes the temperature of the plate is (55-D)° C, find i) the time it will take the plate to reach a temperature of (30+ D) C and ii) the temperature of the plate after 12 minutes.

A hot metal plate at a temperature of (90+D) C is placed in a room at a constant temperature of (20+ D) C. After 20 minutes the temperature of the plate is (55-D)° C, find i) the time it will take the plate to reach a temperature of (30+ D) C and ii) the temperature of the plate after 12 minutes.

Algebra & Trigonometry with Analytic Geometry
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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A hot metal plate at a temperature of (90+D)'C is placed in a room at a constant temperat ure of (20 + D) C. After 20 mimites the temperature of the plate is (55 – D)°C, find i) the time it will take the plate to reach a temperature of (30 + D)°C and ii) the temperature of the plate after 12 minutes. Note: D = 9
Transcribed Image Text:A hot metal plate at a temperature of (90+D)'C is placed in a room at a constant temperat ure of (20 + D) C. After 20 mimites the temperature of the plate is (55 – D)°C, find i) the time it will take the plate to reach a temperature of (30 + D)°C and ii) the temperature of the plate after 12 minutes. Note: D = 9
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