Find a vector-parametric equation r 1(t)=⟨x(t),y(t),z(t)⟩r→1(t)=⟨x(t),y (t),z(t)⟩ for the shadow of the circular cylinder x2+z2=9x2+z2=9 in the xzxz-plane.

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Who long does it take to drive 150 miles at 45 miles per hour