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81/11
It is: 3 and 81/100 as a mixed number
x2 - 11 = 70 x2 = 81 x = sqrt(81) x = ±9
Oh, dude, 81 divided by 9 is like, 9. So, as a whole number, it's just 9. Easy peasy lemon squeezy. Math can be a walk in the park, you know?
The whole number of 81 over 90 is 0.9 when expressed as a decimal. To find this, divide 81 by 90 to get 0.9. This is because both 81 and 90 are divisible by 9, so simplifying the fraction gives 9/10, which equals 0.9 as a decimal.