exam Maths Puzzle Numerical Ability

Write 8/(1+i) as a complex number in standard form

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exam Other Question

Currently you have $80.00 and your sister has $145.00. You decide to save $6.00 of your allowance each week, while your sister decide to spend her whole allowance plus $7.00 each week. How long will it be before you have as much money as your sister. -1/2x ≥ 2