NEED HELP URGENTLY!!

Is this a rational or irrational number???

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x.which term can she add to the polynomial that would not change its grestest common factor? check all that apply

Select the term that describes the linear portion in this quadratic equation 7x^2-12x+16=0 a) -12x b) 7x^2 c) 16