Find the center of mass of a thin plate covering the given region with the given density function.The triangular region cut from the first quadrant by the line y = -x + 1, with density ?(x) = x
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Answer: C
Mathematics
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Find the area.
A. 24 m2 B. 12 m2 C. 288 m2 D. 144 m2
Mathematics
Solve the problem.Find the Fahrenheit temperature when the Celsius temperature is 90° C.
A. 
°F
B. 162 °F
C. 194 °F
D. 122 °F
Mathematics
Perform the indicated operation and express in lowest terms.
- 
A. 7
B. 
C. 
D. 
Mathematics
The pH of a solution is given by 
, where 
is the concentration of hydrogen ions (in gram atoms per liter). What is the rate of change of pH with respect to 
style="vertical-align:middle;" /> if 
? Round your answer to two decimal places.
A. 0.20
B. -3.17
C. -25.55
D. 4.07
E. -58.82
Mathematics