4.9 * 106
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7^2 = 49 = 4.9 x 10^1
To find 45% of 49, just multiply 49 by .45, which is the decimal form of 45%. Using the standard algorithm of multiplication, 49 x 0.45 = 245 + 1760 = 2005 <-- put in the two decimals in the multiplication problem, and you get 20.05. So, 45% of 49 is 20.05.
12/49 is in its simplest form.
49/60 is the simplest form.
49/24 is in its simplest form.