Hỏi có bao nhiêu giá trị thực của tham sốm để hệ phương trình |x| - y2 + 4y - 4 = 0 và mx2y + (m2 - 2)y - 4m + 4 = 0 có nghiệm duy nhất

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

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