Perform the operation. write your answer in scientific notation 1). 7 x 10^6 - 5.3 x 10^6 2). 3.4 x 10^4 + 7.1 x 10^5

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis