Solve the problem.Find the center of mass of a tetrahedron of constant density bounded by the coordinate planes and the plane 
.
A. 
= 2, 
= 
, 
= 
B. 
= 1, 
= 
, 
= 
C. 
= 
, 
= 
, 
= 2
D. 
= 
, 
= 
, 
= 4
Answer: C
Mathematics
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Solve by using the square root property.8x2 + 2 = 1802
A. x = 15 B. x = 901 C. x = ± 16 D. x = ± 15
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Find the acute angle, in degrees, between the lines.(1 + 
) x + (1 - 
) y = 14 and 
x + y = 11
A. 60° B. 30° C. 75° D. 45°
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Provide an appropriate response.Write 11 ÷ 25 in fraction form.
A. 
B. 
C. 
D. 
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Use the quadratic formula to solve the equation.x(4x + 1) = 2
A. 
, 
B. 
, 
C. 
, 
D. 
, 
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