What is the correct expression of position vector rcb (in feet)?

4i+j-2k

Step-by-step explanation:

The missing figure in this problem as been attached, as we can see the figure is a 3-D figure consisting of rods with point C and B.

Using the figure we can find the value of position vector

r=-

As we know , a position vector is the difference of position vector of ending point to the position vector of starting point, here the starting point is C and ending point is B. Hence, the expression above.

We need to first find and

Using the figure:

=0i+4j+2k

= -4i+3j+4k

r=-=(0i+4j+2k) - (-4i+3j+4k)

r=4i+j-2k (feet)

Magnitude of ===4.583 ft

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2

answer: 12x^2+6x

step-by-step explanation:

6x does not equal 24x. hope it works!