Dan spends 3
4
of his wages on rent and
1
8
on food. If he makes £240 per week, how much money does he have left?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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