What are the solutions of the equation x4−10x2+9=0? Use u substitution. Group of answer choices

x = 3 and x = 1

x = 3i, x = -3i, x = i, x = -i

x = -3, x = 3, x = 1, and x = -1

x = -3 and x = -1

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

17 in long 1.3 ft wide and 8in high what is the volume

How many glue sticks are in a basket containing 96 scissors, if the ratio of glue sticks to scissors is 19 to 57.