PLS HELP- Scientists believe Niagara falls were formed 10,000 years ago, and they predict it will last 25,000 years. how old will Niagara falls be then?

Which elements in the set below are integers? 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9 a. 12, √ 25 , –7, 9 b. 12, √ 25 , –7, 14⁄7, 9 c. –3⁄4, 25 , √ 5 ,14⁄7 d. 12, –7, 9

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries.what fraction of kathy’s money was left?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?