2.(5x10^-2)/(2x10^10=?

2.5x10^-5
2.5x10^-1
25x10^1
25x10^2

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex