exam Maths Puzzle Numerical Ability

Solve: 3^(x^2+4x) = 1/27

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exam Other Question

If angle A and angle B are acute angles of right triangle ABC, what is the value of sin A - cos B ? 4. Use the indicated property to write an expression that is equivalent to the following expression.
6 � 20 + 6 � 4 (distributive property)