A cup of coffee is taken out of a microwave oven and placed in a room. The temperature, T , in degree Fahrenheit, of the coffee after t minutes is modeled by the function T = 70 + 130 e − 0.04355 t . The graph of the function is shown in the figure. Use the graph to answer each of the following questions, a. What was the temperature of the coffee when it was first taken out of the microwave? b. What is a reasonable estimate of the temperature of the coffee after 20 minutes? Use your calculator to verify this estimate. c. What is the limit of the temperature to which the coffee will cool? What does this tell you about the temperature of the room?
A cup of coffee is taken out of a microwave oven and placed in a room. The temperature, T , in degree Fahrenheit, of the coffee after t minutes is modeled by the function T = 70 + 130 e − 0.04355 t . The graph of the function is shown in the figure. Use the graph to answer each of the following questions, a. What was the temperature of the coffee when it was first taken out of the microwave? b. What is a reasonable estimate of the temperature of the coffee after 20 minutes? Use your calculator to verify this estimate. c. What is the limit of the temperature to which the coffee will cool? What does this tell you about the temperature of the room?
Solution Summary: The author explains the function T=70+130e-0.04855t, which determines the temperature of coffee after 20 minutes of taking out of the microwave.
A cup of coffee is taken out of a microwave oven and placed in a room. The temperature, T, in degree Fahrenheit, of the coffee after t minutes is modeled by the function
T
=
70
+
130
e
−
0.04355
t
. The graph of the function is shown in the figure.
Use the graph to answer each of the following questions,
a. What was the temperature of the coffee when it was first taken out of the microwave?
b. What is a reasonable estimate of the temperature of the coffee after 20 minutes? Use your calculator to verify this estimate.
c. What is the limit of the temperature to which the coffee will cool? What does this tell you about the temperature of the room?
I want to learn this topic l dont know anything about it
Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution.
Remember that:
A matrix is in row echelon form if
Any row that consists only of zeros is at the bottom of the matrix.
The first non-zero entry in each other row is 1. This entry is called aleading 1.
The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.
PRIMERA EVALUACIÓN SUMATIVA
10. Determina la medida de los ángulos in-
teriores coloreados en cada poligono.
⚫ Octágono regular
A
11. Calcula es número de lados qu
poligono regular, si la medida
quiera de sus ángulos internos
• a=156°
A= (-2x+80
2
156 180-
360
0 = 24-360
360=24°
• a = 162°
1620-180-360
6=18-360
360=19
2=360=
18
12. Calcula las medida
ternos del cuadrilá
B
X+5
x+10
A
X+X+
Sx+6
5x=3
x=30
0
лаб
• Cuadrilátero
120°
110°
• α = 166° 40'
200=180-360
0 =
26-360
360=20
ひ=360
20
18 J
60°
⚫a=169° 42' 51.43"
169.4143180-340
0 = 10.29 54-360
360 10.2857
2=360
10.2857
@Sa
Chapter 4 Solutions
MyLab Math with Pearson eText -- Combo Access Card (18-wk) for Algebra & Trigonometry
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