What is 0.000982 in scientific notation

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?