exam Maths Puzzle Numerical Ability

For the home described in exercise 15, if the roof is 7 m from the peak to the eave and the attic space is 3 m high at the peak, how long does each of the pieces of insulation need

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exam Other Question

Verify that sec0(origin of zero)/sin0(origin of zero) times coto (origin of zero)/csc 0(origin of zero)=csc is an identity. Multiply the fraction.

2x squared - x - 3 OVER 3x squared + 7x + 4 TIMES 3x squared - 11x - 20 OVER 4x squared - 9