At 9:00 AM, a thermometer reading 70°F is taken outdoors where the temperature reading is 15°F. At 9:05 AM, the thermometer reading is 45°F. At 9:10 AM, the thermometer is taken back indoors where the temperature is fixed at 70°F. Find (i) the reading at 9:20 AM and (ii) when the reading to the nearest degree, will show (70°E) ind

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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At 9:00 AM, a thermometer reading 70°F is taken outdoors where the temperature
reading is 15°F. At 9:05 AM, the thermometer reading is 45°F. At 9:10 AM, the
thermometer is taken back indoors where the temperature is fixed at 70°F. Find (1)
the reading at 9:20 AM and (ii) when the reading to the nearest degree, will show
the correct (70°F) indoor temperature
a. i. 31.36°F
ii. 9:36 AM
b. i. 31.36°F
ii. 9:26 AM
c. i. 31.36°F
ii. 9:56 AM
d. i. 31.36°F
ii. 9:46 AM
e. none of these
Transcribed Image Text:At 9:00 AM, a thermometer reading 70°F is taken outdoors where the temperature reading is 15°F. At 9:05 AM, the thermometer reading is 45°F. At 9:10 AM, the thermometer is taken back indoors where the temperature is fixed at 70°F. Find (1) the reading at 9:20 AM and (ii) when the reading to the nearest degree, will show the correct (70°F) indoor temperature a. i. 31.36°F ii. 9:36 AM b. i. 31.36°F ii. 9:26 AM c. i. 31.36°F ii. 9:56 AM d. i. 31.36°F ii. 9:46 AM e. none of these
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