Indicate the metric unit of measurement that would be best used to express the area of the object.A corn field
A. square centimeters
B. hectares
C. square millimeters
D. square meters
Answer: B
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If é = 39.5 and a = 3.9, find c.
a. 2.48
b. 4.29
c. 6.13
d. 7.09
e. 8.49
Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 2
B. 
C. 
D. 
x
Newton's law of cooling states that the rate at which the temperature of an object changes is directly proportional to the difference in temperature between the object and that of the surrounding medium. A cup of coffee is prepared with boiling water (212 °F) and left to cool on the counter in a room where the temperature is 70 °F. If the temperature of the coffee is 120 °F after 1 min, determine when the coffee will be cool enough to drink (say, 111 °F). ? Round the answer to the nearest tenth, if necessary. ? t = __________ min
Fill in the blank(s) with the appropriate word(s).
Solve the system of linear equations by the method of elimination. Find (r,s) and check your solution algebraically.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?