Solve the problem.The figure below shows an addition pyramid, in which each number is the sum of the two numbers immediately below. 
For the incomplete addition pyramid below, show that the values in the square can be determined by forming and solving an equation in the unknown variable shown. 
What will be an ideal response?
Therefore, the following solution is obtained:
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Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 3
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
?Which of the following is true about Similar Triangles?
A. ?If side a = 70", angle C = 55?, side b' = 80", then angle C' is 75?. B. ?If side a = 70", angle C = 55?, side b' = 80", then angle C' is 55?. C. ?If side a = 70", angle C = 55?, side b' = 80", then the triangles are not necessarily similar. D. ?If side a = 70", angle C = 55?, side b' = 80", then the triangles are similar. E. ?If side a = 70", angle C = 55?, angle B = 70?, then side A is the smallest side.
Factor and, if possible, simplify the expression.1 - 2 sin2x + sin4x
A. (1 - sin2x) B. sin2x C. (1 + tan2x) D. cos4x
Graph the linear function and give the domain and range.g(x) = x + 6
A. D = (-?, ?),
R = (-?, ?)
B. D = (-?, ?),
R = (-?, ?)