The school record in the 200-meter dash is 34.5 seconds. Which graph represents the set of times, in seconds, that would create a new school record?

A number line going from 32.5 to 35.5. An open circle is at 34.5. Everything to the left of the circle is shaded.
A number line going from 32.5 to 35.5. A closed circle is at 34.5. Everything to the left of the circle is shaded.
A number line going from 32.5 to 35.5. An open circle is at 34.5. Everything to the right of the circle is shaded.
A number line going from 32.5 to 35.5. A closed circle is at 34.5. Everything to the right of the circle is shaded.

Question: The school record in the 200-meter dash is 34.5 seconds. Which graph represents the set of times, in seconds, that would create a new school record?

A.) A number line going from 32.5 to 35.5. An open circle is at 34.5. Everything to the left of the circle is shaded.

Step-by-step explanation:

The school record in the 200-meter dash is 34.5 seconds, witch will lead us to "A & B" C & D will be automatically eliminated. So Next "B" will be eliminated because It has a fully shaded circle, So in conclusion . . . we get an answer of . . .  "A"

Note: I hope this helped explain a little more than the other Answer, And maybe i can have brainliest? Its okay if not! Have a Lovely day! ^^

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