Find M STR?

Find the value of x? who can help me please? ​

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Which value is not a solution of 8x^3 – 1 = 0

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total