Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = 6 - x and the axes
A. 
= 18, 
= 18
B. 
= 6, 
= 6
C. 
= 36, 
= 36
D. 
= 2, 
= 2
Answer: D
Mathematics
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Restate the equation in slope-intercept form.20x + 2y = 11
A. y = - 10x + 
B. y = 20x - 11
C. y = 10x - 
D. y = 10x + 
Mathematics
Subtract.
A. 2810 B. 2800 C. 5810 D. 2700
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Write a numerical expression for the phrase and simplify it.Fifteen less than the difference between four and negative eight
A. (4 - 8) - 15; -19 B. [4 - (-8)] - 15; -19 C. [4 - (-8)] - 15; -3 D. 15 - [4 - (-8)]; 3
Mathematics
Use the trigonometric substitution to rewrite the algebraic expression as a trigonometric function of ?, where 
. Then find sin ? and cos ?.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics