exam Maths Puzzle Numerical Ability

Solve the pairs of equations using the substitution method:
problem#6. x=1-y
y=x-9

problem#7. 2x-y=0
3x-2y=-3

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exam Other Question

simplify:


3 square root b^2 divided by 4 square root b^3


a. 1 over 12 square root b
b. 12 square root b^5
c. 7 square root b^5
d. 12 square root b
Sketch the graph of y=f(-x)