exam Maths Puzzle Numerical Ability

Solve, and express your answer in exact form 3^x = 4^(l-x)

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exam Other Question

IM trying to slove radical equations, and I have no idea how to do it?

1. x= radical sign with 2x+8 in it?

2. radical sign with 3x+4+5 = 3

3. The area of a circle is about How do you solve: The second angle of a triangle is 3X as large as the 1st. The third angle is 20 degrees larger than the sum of the firs two. Find the measures of the angles.