Solve the problem.Use Newton's Law of Cooling to find the temperature in the following case. A glass of water with a temperature of 7°C is placed in a room with a temperature of 20°C. One minute later the water has warmed to 8°C. After how many minutes does the water have a temperature that is 80% of the ambient temperature?
A. ? 22 min
B. ? 26 min
C. ? 15 min
D. ? 18 min
Answer: C
Mathematics
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Simplify the expression by using the order of operations.5 ? 3 - 7
A. 105 B. 8 C. 20 D. 22
Mathematics
Match the description with its graph.
A. A line with negative slope and a negative y-intercept. B. A line with positive slope and a negative y-intercept. C. A line with negative slope and a positive y-intercept. D. A line with positive slope and a positive y-intercept.
Mathematics
Solve the problem.Find the volume of the circular cone pictured below. Use 3.14 for ? and round to the nearest whole unit.
A. 63 in.3 B. 188 in.3 C. 283 in.3 D. 377 in.3
Mathematics
Determine whether the statement is true or false.14 > 5
A. False B. True
Mathematics