Prove that one of the pairs of triangles are congruent

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42