The bears have won 7 and tied 2 of their last 13 games. they have not forfeited any of their games. which ratio correctly compares their wins to losses

The ratio to their wins to losses is 7:4. They have won 7 games and tied 2. 7+2=9 In total they played 13games. 13-9=4. That means they lost 4 games. So the ratio to their wins to losses is 7:4.
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First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.