Use encryption matrix A to encrypt the plain text message. matrix 2

Encrypted message = matrix 3

e11 =
e12 =
e13 =

e21 =
e22 =
e23 =

Please help algebra is kicking my butt

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

If (x) = 3х - 2 and g(x) = 2х+ 1, find (f- g)(x). оа. х- з ов. 3-х ос. 5x - 1 od. 5x - з