Verify that the given equation is an identity.cosh2x = 

What will be an ideal response?

cosh2x =  =   
 =  Multiply top and bottom by 
 =    
 = 

Mathematics

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Remove or add parentheses as indicated.Rewrite (x + y + z)(x - y) without parentheses.

A. x2 - y2 + xz - yz B. x2 - y2 + xz - yz - 2xy C. x2 - y2 + xz - yz + 2xy D. x2 + y2 + xz - yz + 2xy

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Mathematics

Add. + 

A. 7 B. 63 C. -13 D. 33

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Mathematics

Use a Venn Diagram and the given information to determine the number of elements in the indicated region.n(A) = 33, n(B) = 19, n(A ? B) = 1, n(A' ? B') = 9. Find n(U).

A. 64 B. 51 C. 52 D. 60

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Mathematics

For any quadrilateral with perpendicular diagonals of lengths and , the area isgiven by A =

src="https://sciemce.com/media/4/ppg__cognero__Section_8.2_Perimeter_and_Area_of_Polygons__media__40f0dbf3-dbd0-4d30-a498-76d23ea11872.PNG" style="vertical-align: -2pt;" />. Answer the following statement true (T) or false (F)

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Mathematics