Tìm ma trận của các hệ véctơ sau trênP3(t) a)a= 2−t+t2+ 2t3,b= 2t+t2−t3,c= 1 + 2t−t2−t3,d= 1−t2+t3

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?

Someone me i need with this stuff