Three trains A, B, and C, leave the train station at the same time. The graph below shows the relationship between time and distance for Train A. Based on the graph below, what is the speed of Train A expressed in unit rates? A. 40 miles per hour
B. 30 miles per hour
C. 120 miles per 4 hours
D. 180 miles per 6 hours

B

Step-by-step explanation:

a

b

d

step-by-step explanation:

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.