4. Speed = 9,000 mph; Time= 4.5 hours; Distance= ?

distance = 65178.4km/hr

Step-by-step explanation:

given that speed = 9000mph

time = 4.5hours

distance =

recall,

speed = distance / time

distance =  speed x time

distance = 9000 x 4.5

distance = 40,500

distance converted to kilometer per hour

distance = 65178.4km/hr

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.

c

step-by-step explanation: easy math