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637: 63 + 7 × 4 = 91, 9 + 1 × 4 = 13. Subtract the last two digits from four times the rest. The result must be divisible by 13. 923: 9 × 4 − 23 = 13. Subtract 9 times the last digit from the rest. The result must be divisible by 13. (Works because 91 is divisible by 13). 637: 63 − 7 × 9 = 0. 14: It is divisible by 2 and by 7. [6]
In the first step both numbers were divided by 10, which is a factor common to both 120 and 90. In the second step, they were divided by 3. The final result, 4 / 3 , is an irreducible fraction because 4 and 3 have no common factors other than 1.
The reciprocal of 3 / 7 , for instance, is 7 / 3 . The product of a non-zero fraction and its reciprocal is 1, hence the reciprocal is the multiplicative inverse of a fraction. The reciprocal of a proper fraction is improper, and the reciprocal of an improper fraction not equal to 1 (that is, numerator and denominator are not ...
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Sen. Bernie Sanders (I-Vt.) said on Sunday that he hopes to work with President-elect Trump to raise the minimum wage from $7.25 an hour, the federal standard last raised in 2009. In an interview ...
The House rejected a Republican bill to avoid a government shutdown after President-elect Donald Trump, billionaire Elon Musk and the far-right blew up an earlier, bipartisan deal.
Simplification is the process of replacing a mathematical expression by an equivalent one that is simpler (usually shorter), according to a well-founded ordering. Examples include:
From January 2009 to December 2012, if you bought shares in companies when Mark P. Frissora joined the board, and sold them when he left, you would have a 41.6 percent return on your investment, compared to a 69.3 percent return from the S&P 500.