What is 3.89 × 10–2 written in standard form?

a.
0.000389

b.
0.00389

c.
0.0389

d.
0.389

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?