1. solve for u.
-24 = u ÷ 6
2. solve for b.
-9b = 27
3. solve for h.
-98 = -7h
4.
what is the solution to -5m = -40?
m = -8
m = 200
m = -200
m = 8
5.
what is being done to the variable in the equation -5m = -40?
it's being multiplied by -5.
it's being divided by -5.
it's being multiplied by -40.
it's being divided by -40.
6.
what should be done to both sides of the equation in order to solve n/4 = -12.4?
multiply by -12.4.
divide by -12.4.
multiply by 4.
divide by 4.

-18 degrees is the answer : )

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