65% humans body volume is made of water. How meny kilograms water is in humans body whos weight is 100kg?

Which of the following expressions is equal to 2x^2+8

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*