7.5x - 0.8 = 5.6x + 3.95 anybody know? lol

X = 2.5.

Step-by-step explanation:

I believe 2.5 should be the solution. Here is how you can solve the equation:

Combine like-terms, First combine the simpler numbers, add 0.8 to 5.6X + 3.95. This should get you the equation: 7.5X = 5.6X + 4.75. Then combine 7.5X and 5.6X by subtracting 5.6X from 7.5X to get the equation: 1.9X = 4.75.

Now, divide 4.75 by 1.9. By dividing these two numbers you should get the equation: X = 2.5.

Hope this helps! Let me know.

step-by-step explanation:

(s)he  is right it would be 5.5% because it is smaller than 15.5% or anything smaller than 15.5% in general

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