Use rounding numbers to estimate the sum of 171 + 727

What is the sum of these mixed numbers 4 2/3+ 3 1/9

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units

Sove the equation 6c + 11 = 2c + 59