Ms. jackson read 400 pages in her book over 10 days.
ms. gilpin read 240 pages over 5 days.
1. who read more pages in one day?
circle one: ms. jackson or ms. gilpin
2: how do you know?
3: fill out the following chart for ms. jackson.

If you have easy numbers like this, the problem os easy to solve. So, Ms J read 400 pages over 10 days, ms G read 240 pages to 5 day. We know that 5 if half of 10. If you make the numbers on days the same, but still increase the number of pages, you get, Ms G read more pages, by 20 pages a day.

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12