exam Maths Puzzle Numerical Ability

While Neil Armstrong andd Buzz Aldrin walked on the moon, the Apollo 11 command module completed 1 orbit every 119 minutes.
a) estimate the number of orbits the Apollo 11 module w

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exam Other Question
Solve the following system of equations. what is the value of z?
x+y+z=1
2x-y+3z=-7
3x+2y+2z=4 Find the distance between each pair of points.
(-3,0) and (4,0)?
Thanks