Consider this system of linear equations: 22x − y = -23 (equation 1)
11x + 12y = 1 (equation 2)
To find the value of x, you need to substitute x = (y - 23)/22 x = (y + 23)/22 y = 22x + 23 y = 22x - 23 in equation 2.
The value of x is -1 22/23 1 2 .

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a