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
1 - r/7 Another way to write the same thing is 7/7-r/7 which is (7-r)/7
\ \ \\ \\ >\/ 7 _.-(6' \ (=__._/` \ ) \ | / / | / > / j < _\ _.-' : ``. \ r=._\ `. <`\ \_ \ .`-. \ r-7 `-. ._ ' . ` \ \ `, `-.`7 7) ) \/ \| \' / `-._ .' \\ ( >\ > ,.-' >.' <.' _ .'' <'
-9
area = pi*r*r r = diameter/2 r=7 7*7 = 49 49pi, or 153.9380400258998686846695257807 sq in
22/7*D (or) 22/7*R*R
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%
Since r varies directly with s, we have r = ks (replace k with 5 and s with 7) r = (5)(7) r = 35
r2+6r-7 = (r+7)(r-1) when factored
7 × (r + 8) = 7(r + 8) = 7r + 56
If: -7 = 7-2r Then: r = 7
It is 1 - r/7
7, R 16