Evaluate the integral.


Mathematics

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Multiply. Assume that all variables represent non-negative real numbers.( - )

A.
B.  - 
C. 7 - 7
D. 8

Mathematics

Solve the problem.An open-top box is to be constructed from a 9 cm by 11 cm piece of cardboard by cutting out squares from each corner and folding up the sides as shown in the figure. Find a polynomial that represents the area of the bottom of the box in the accompanying figure. Find a polynomial that represents the volume of the box. 

A. Area of bottom: 4x2 - 38x + 90, Volume: 4x3 - 38x2 + 90x B. Area of bottom: 4x2 - 40x + 99, Volume: 4x3 - 40x2 + 99x C. Area of bottom: 4x2 + 40x + 99, Volume: 4x3 + 40x2 + 99x D. Area of bottom: 4x2 - 38x - 90, Volume: 4x3 - 38x2 - 90x

Mathematics

Find the inverse, if it exists, of the given matrix.A = 

A.

B.

C.
No inverse
D.

Mathematics

Find using implicit differentiation. ? ?

A.
B. ?
C. ?
D. ?
E. ?

Mathematics