exam Maths Puzzle Numerical Ability

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3 m is the H in the center 7 m is the L from an eave to the peak
= base length 6.3²m 7²=3²+b² 7²-3²= ___ ?? I have 6.3²m

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TRIAN

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exam Other Question
THE COST OF A FIELD TRIP IS $280 PLUS $5 PER STUDENT. THE SCHOOL CAN SPEND AT MOST $500 ON THE FIELD TRIP. HOW MANY STUDENTS ARE ABLE TO GO ON THE FIELD TRIP? I need to find out how to simplify the following problem by removing the factors of 1.
48v^4y^5/18v^2y^2