exam Maths Puzzle Numerical Ability

How do I do these problems with variables and exponents?

z to the 4th power /x squared


z to the 4th power / z to the 5th power

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exam Other Question
Find the misssing side length of each right triangle. Round to the nearest tenth and do ALL!!!


A.) A=12,B=9,C=?

B.) A=14,B=?,C=35

C.) A=?,B=4,C=41




Thanks so much the det of x+2 2x+3 3x+4
2x+3 3x+4 4x+5
3x+5 5x+8 10x+17
is zero. solve for x