calculate the weight of a piece of steel to the nearest tenth of a pound. the diameter is 40" and the thickness is 2

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?