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Q: What number raised to the 5th power equals 243?

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Notice that 243 is 3 to the 5th power.So your equation says:3x = 35I'd say that 'x' is probably 5.

9x = 243 ln(9x) = ln(243) xln(9) = ln(243) x = ln(243)/ln(9) x = 2.5 NB this works with log10 too. NBB if you don't have a calculator, this kinda question will only have easy values of x like integer values or 0.5, so its always worth chucking numbers in.

It's the same as 1 divided by (3 to the power 5).

3^-5=(1/3^5)=1/243

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243 = 35

6.2402514691557123435901704730737

It equals 243.

b = -3

243 times 3 equals 729.

The letter a is a variable. "To the fifth" means to the fifth power, or a*a*a*a*a. If a equals 3, "a to the fifth" equals 243.

242 +1 = 243

9 x 27 equals 243

81% multiplied by 300 equals 243

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