they are 7 hills in rome that are very large in size
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Let R = % rateEquation: 52.5 = R * 7 7R = 52.5 divide the equatio n by 7 R = 52.5/7 R = 7.5 Multiply by 100% Thus; R = 750%
r2+6r-7 = (r+7)(r-1) when factored
7, R 16
7 colors in a rainbow
You subtract 11 from both sides and r equals negative 7. See... r+11=3 -11 -11 r=7