What’s the distance between (-2,7) and (7,9)

1. are the triangles similar and if so why? what is the value of x? show your work.

Which number completes the inequality? 2/3 < _ < 7/9

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis