Solve this equation for a:

a +[ 11 17 -8 13 ] = [ 0 1 -2 3 ]

a11 =
a12=
a13=
a14=

 a₁₁ = -11      a₁₂ = -16       a₁₃ = 6      a₁₄ = -10

Step-by-step explanation:

"A" represents the following matrix of unknown values [a₁₁    a₁₂      a₁₃     a₁₄]

[a₁₁    a₁₂      a₁₃     a₁₄]   +    [11    17      -8     13]   =     [0   1      -2     3]

a₁₁ + 11 = 0   -->   a₁₁ = 0 - 11    = -11

       a₁₂ + 17 = 1   -->   a₁₂ = 1 - 17    = -16

                   a₁₃ + -8 = -2  -->  a₁₃ = -2 + 8  = 6

                             a₁₄ + 13 = 3   -->  a₁₄ = 3 - 13   = -10

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: