A cup of coffee has a temperature of 90°C when it is poured and allowed to cool in a room with a temperature of 20°C. After 1 minute, the temperature of the coffee is 85°C. Determine the temperature of the coffee at time t. How long must you wait until the coffee is 25°C? a) T(t)=? (Use integers or decimals for any numbers in the expression. Round to four decimal places as needed.) b)You will have to wait approximately ____ minutes untill the coffee is 30 degrees C.
A cup of coffee has a temperature of 90°C when it is poured and allowed to cool in a room with a temperature of 20°C. After 1 minute, the temperature of the coffee is 85°C. Determine the temperature of the coffee at time t. How long must you wait until the coffee is 25°C? a) T(t)=? (Use integers or decimals for any numbers in the expression. Round to four decimal places as needed.) b)You will have to wait approximately ____ minutes untill the coffee is 30 degrees C.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 88E
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A cup of coffee has a temperature of
90°C
when it is poured and allowed to cool in a room with a temperature of
20°C.
After
1
minute, the temperature of the coffee is
85°C.
Determine the temperature of the coffee at time t. How long must you wait until the coffee is
25°C?
a)
T(t)=?
(Use integers or decimals for any numbers in the expression. Round to four decimal places as needed.)
b)You will have to wait approximately ____ minutes untill the coffee is 30 degrees C.
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