Suppose p varies directly with d and p= 3 when d= 5. what is the value of d when p= 12

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)