Write the complex number in rectangular form using exact values if possible. Otherwise, round to one decimal place.3(cos ? + i sin ?)
A. 3
B. -3i
C. -3
D. 3i
Answer: C
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Let the function src="https://sciemce.com/media/3/ppg__cognero__2.1_Functions_and_Function_Notation__media__48e2ba62-e07e-4187-bb43-a4b7459b2c6c.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_ee0331832c7b443582a11a857" />.
be defined by 
, where x and 
are real numbers. Find
?
?
A. ?
B. ?
C. ?
D. ?
E. 
Solve the problem.A thermometer reading 11°C is brought into a room with a constant temperature of 30°C. If the thermometer reads 17°C after 4 minutes, what will it read after being in the room for 7 minutes? Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to two decimal places.)
A. 5.87°C B. 28.67°C C. 20.22°C D. 39.78°C
Use the limit process to find the area of the region between the graph of the function and the
x-axis over the specified interval.
?
?
A. A = 21.5 square units B. A = 21 square units C. A = 19.5 square units D. A = 20 square units E. A = 20.5 square units
Find the area between the curves.x = 0, x = 1, y = x2 + 6, y = x2 + 2
A. 16 B. 4 C. 12 D. 8