Find the indicated term or coefficient of the binomial expansion.Find the coefficient of y4 in the expansion of (y + 3)9.

A. 126
B. 10,206
C. 243
D. 30,618


Answer: D

Mathematics

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Solve the formula for the specified variable.I =   for n

A. n =  
B. n = IR(Ir - E)
C. n = 
D. n =  

Mathematics

Solve the problem.The graphs below show the first and second derivatives of a function  . Select a possible graph of f that passes through point P.f'?f"?

A.

[NOTE: Graph vertical scales may vary from graph to graph.]
B.

[NOTE: Graph vertical scales may vary from graph to graph.]
C.

[NOTE: Graph vertical scales may vary from graph to graph.]
D.

[NOTE: Graph vertical scales may vary from graph to graph.]

Mathematics

Find the exact value of the expression.cos  cos  + sin  sin 

A. 1
B.
C.
D.

Mathematics

Describe all symmetries of the figure shown.

A. 2 lines of symmetry B. 90° rotation symmetry C. 1 line of symmetry D. 180° rotation symmetry

Mathematics