Which set of ordered pairs represents a function? A
{(2,7),(2,8),(3,8)}\left\{\left(2,7 \right),\left(2,8\right),\left(3,8\ right)\right\}{(2,7),(2,8),(3,8)}
B
{(3,2),(3,3),(3,4)}\left\{\left(3,2 \right),\left(3,3\right),\left(3,4\ right)\right\}{(3,2),(3,3),(3,4)}
C
{(4,1),(5,1),(4,4)}\left\{\left(4,1 \right),\left(5,1\right),\left(4,4\ right)\right\}{(4,1),(5,1),(4,4)}
D
{(5,6),(8,6),(9,6)}\left\{\left(5,6 \right),\left(8,6\right),\left(9,6\ right)\right\}{(5,6),(8,6),(9,6)}

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

54.864 meters

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh