The particle of an electron is given by, r (t)=(3t)i +(-4t2)j +(2)k. find the magnitude and the direction of the particle at t=2secs

Answer this question, only if you know the answer. 30 points and brainliest!

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?