How do you write 3.56 million

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

How do i create an equivalent expression that includes parentheses so that the value of the expression is 2 for 3+8-4x2-12

Aplot of land in the shape of a vertical ellipse has a pole at each focus. the foci are 8 feet from the center. if the plot of land is 34 feet across the vertical axis, then it is (a.24 b. 30 c. 32 d. 36) feet across the other axis. the eccentricity of the ellipse traced by the boundary of this plot, rounded to the nearest thousandth, is (a.0.543 b.0.515 c.0.471 d. 0.459)