Which of the following expressions is equivalent to 9x^2 +169 ?

A. (3x +13)^2
B. (3x+13i)^2
C. (3x-13i)^2
D. (3x - 13)(3x +13)
E. (3x -13i)(3x +13i)

Aregular hexagon has sides of 2 feet. what is the area of the hexagon? 12 ft2 12 ft2 24 ft2 6 ft2

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?