What is the value of x? look at image attached

What is the area of the triangle 10 13 12

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate