Is this work correct?

4 (x+2) ≤8

4x+8≤8

-8 - 8

4x≤8

4x/4≤8/4

x≤0

What is the length of the altitude drawn to the hypotenuse? 5 14

What is the difference between 3750 millilitres and 3.75 L?

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What is the derivative of sin sin sin x

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If lines are parallel, their intersection forms a right angle. TRUE FALSE