19. the sum of twelve and sixteen divided by the sum of three and four

Is the orthocenter of a triangle on the inside ?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr