Heather spent a total of 70 minutes working out at the gym. she spent 20 minutes longer running on the treadmill than she spent lifting weights. when t represents the time heather spent running on the treadmill and w represents the time she spent lifting weights, which system of equations represents this situation?

Late at night some traffic signals change patterns and become ?

Factor out the greatest common factor. minus − 14 14p3 plus + 10 10p2 plus + 4 4p

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.