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Earn +20 ptsQ: What number 81 uses index form?
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What is 81 as index form?
81 = 92
Is -81 an irrational number?
No, -81 is not an irrational number because it can be represented in the form x/y = -81
In index form 90?
In index form, 90 can be expressed as 9^2. This is because the index form represents the number as a base raised to a power, where the base is 9 and the power is 2. This is equivalent to 9 * 9, which equals 81.
Which binary number is equal to the decimal number 81?
In binary form it is 1010001.
How can you write 81 in mathematical form?
Just writing "81" is mathematical enough for my taste. After all, that's a number, and numbers are mathematical.
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