Solve the problem.Newton's Law of Cooling states that the rate of change of temperature of an object is proportional to the difference in temperature between the object and the surrounding medium. Thus, if T is the temperature of the object after t hours and T0 is the (constant) temperature of the surrounding medium, then
where k is a constant. A cup of coffee with a temperature of 102°F is placed in a freezer with a temperature of 0°F. After 7 minutes, the temperature of the coffee is 57.5°F. When will its temperature be 41°F? Round your answer to the nearest minute.
A. 24 minutes after being placed in the freezer
B. 21 minutes after being placed in the freezer
C. 11 minutes after being placed in the freezer
D. 14 minutes after being placed in the freezer
Answer: C
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Make a bar graph to represent the data.Construct a vertical bar graph for the relative frequencies given.
What will be an ideal response?
Solve the system of linear equations using matrices.
A. (0, -4) B. (-4, 0) C. (4, 0) D. (0, 4)
Find all angles in degrees that satisfy the equation. Round approximate answers to the nearest tenth of a degree.tan ? = -2.01
A. {
? = 26.5° + k180°}
B. {
? = 116.5° + k180°}
C. {
? = 243.5° + k180°}
D. {
? = 153.5° + k180°}
This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:10 years of age or older
A. 93 B. 11 C. 82 D. 7