HCF of 16, 50, 80 I need it please help me

HCF = 2

Step-by-step explanation:

➲The HCF or GCF is the highest factor that occurs in all listed numbers, so lets start by listing all the factors and find the highes shared number.

▶The factors of 16 are: 1, 2, 4, 8, 16

▶The factors of 50 are: 1, 2, 5, 10, 25, 50

▶The factors of 80 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

➲As we can see the highest number they share is 2 so the HCF or GCF is 2.

Brainliest is much appreciated! Hope this helped!

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