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Write The repeating decimal 0.7 as a fraction in simplest form?
It is 7/9.
Is a number with an unending decimal expansion irrational?
No. If the decimal expansion falls into a repeating pattern (however long) then the number is rational. For example, 0.33... is the rational number 1/3. or 0.04142857142857... where the pattern 142857 continues forever is the rational number 29/700.
What is 0.30 as a percent?
To convert a decimal to a percentage multiply by 100: 0.30 x 100 % = 30 %
What is 999999999999999999999999999 x 987654432111?
9.87654432110999999999999999012345567889 × 10^38 or 987 undecillion, 654 decillion, 432 nonillion, 110 octillion, 999 septillion, 999 sextillion, 999 quintillion, 999 quadrillion, 999 trillion, 12 billion, 345 million, 567 thousand 889. To figure it, rewrite 999999999999999999999999999 as 1000000000000000000000000000 - 1. Then figure (1000000000000000000000000000 - 1) x 987654432111 = 987654432111000000000000000000000000000 - 987654432111, which after subtracting, you get: 987,654,432,110,999,999,999,999,999,012,345,567,889 (the answer above).
What is the smallest whole number with 3 digits?
-999
