In trapezoid ABCD, O is the point of intersection of the diagonals. The area of
AAOD is 15 ft. The altitudes from B and O to the
longer base are in a 5:3 ratio. Find the area of
AABD and the area of AMOC if M is the midpoint
of the leg CD.

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

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School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?