(a) The Using the substitution u = 3^x solve the equation 3^x+ 3^2x= 3^3x giving your answer correct to
3 significant figures

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step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

step-by-step explanation:

oh the deck is the size of my dic k so about 320 inches hope u get my dic k as the answer

answer is  

a.

16.1

hope you got it chief.