A family of beavers gnawed down 385 trees one year, 344 trees the next year, and 272 trees the next year. Estimate the number of trees that the family gnawed down in those three years by rounding to the nearest ten first and then adding the rounded numbers. tres=

5(-9w) put expression in distributive property

Simply 8x squared + 5(7x squared- x) - 2x =

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.