When harvesting strawberries by hand a person is able to collect 50 pounds a day, while a machine is able to collect 6,000 pounds. 98% of the strawberries that are picked by
hand are sellable, while only 90% of the ones picked by the machine are sellable. Write
an expression of how many pounds of strawberries are able to be sold using h for the
number of day the hand picker work and m the number of days the machine works.

answer: the answer is 40.82

step-by-step explanation: 3.14 x 13(or half of 26) to the power of 2

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

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation: