Solve the problem.Evaluate 
at (u, v) = (3, 5) for the function w(x, y, z) = xz + yz - z2; x = uv, y = uv, z = u.
A. 54
B. 60
C. 0
D. -6
Answer: A
Mathematics
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Solve the problem.Prove that if u is a differentiable function of t and f is a differentiable scalar function of t, then 
.
What will be an ideal response?
Mathematics
Right triangle ABC has 
, 
, and 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_14455ebf5b3b4469b28aa8009" />. Use this information to find cos A.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Identify the radicand and index.xy2 
A. 
; 2
B. xy2; 2
C. 
; 3
D. x + 4; 3
Mathematics
Divide. If a repeating decimal is obtained, use notation such as 0.
, 0.
, or 0.
.3
A. 3.2
B. 3.
C. 3.
D. 3.25
Mathematics