Convert this rational number to its decimal format and round to the nearest thousand 6/7?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?