exam Maths Puzzle Numerical Ability

Can someone please assist me with this? Thank you.

A plane took 1 hour longer to travel 560 miles on the first portion of a flight than it took to fly 480 miles on the second po

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exam Other Question

Sketch the angle with measure (-2π)/3 radians. Then label its reference angle.

Thanks Find inverse of
a b c d
-b a -d c
-c d a -b
-d -c b a

If this is too difficult could you tell me how i go about finding the adjacent of a 4x4 matrix please. Thankyou