Provide an appropriate response.Show that the nth triangular number is 
.
What will be an ideal response?
Answers will vary
Mathematics
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Provide an appropriate response.Find the total force against the surface of a tank full of liquid of weight density 3 for a tank in the shape of a sphere of radius 3.
A. 108? B. 81? C. 324? D. 162?
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Evaluate the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
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Solve the equation after making an appropriate substitution.(3x - 6)2 + 3(3x - 6) + 2 = 0
A. 
B. 
C. 
D. 
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Let W be the subspace spanned by the u's. Write y as the sum of a vector in W and a vector orthogonal to W.y = 
, u1 = 
, u2 = 
A.
y = 
+ 
B.
y = 
+ 
C.
y = 
+ 
D.
y = 
+ 
Mathematics