Latitude and longitude describe locations on the earth with respect to the equator and prime meridian. the table shows the latitude and daily high temperatures on the first day of spring for different locations with the same longitude.

The correct option is B.

Step-by-step explanation:

The general equation of regression or best fit line is

               .... (1)

where, a is slope and b is y-intercept of the best fit line.

Using graphing calculator, we get

Substitute a=-1.67 and b=123.91 in equation (1).

The equation of best fit line is y=-1.67x+123.91.

The slope of the line is -1.67. It means the temperature decreases about 1.7° for each 1 degree increase north in latitude.

Therefore the correct option is B.

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

answer: 12

step-by-step explanation:

because yes