The equations 5x+2y=48 and 3x+2y=32 represent the money collected from school concert ticket sales during two class periods. let x represent the cost for each adult ticket and let y represent the cost for each student ticket. the cost of a student's ticket is $

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Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?