exam Maths Puzzle Numerical Ability

It says for exercises 10-12 ray bx bisects angle abc. solve for x and find m angle abc.

10. m angle ABX = 5x,m angle XBC = 3x + 10


Then I have another one that says..

A

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exam Other Question

Solve the system by graphing.
1. 4x+y=14
16x+4y=56

2. 6x+y=36
x+3y=23
Explain how to construct a square using a compass and a streight-edge. Clearly define each step.
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Can someone please help me with this? I don't know how to do it.