Alejandro has to go to a meeting in santiago, chile.
this is 540 km from his home.
he sets off from home at 6: 15 am
he expects to drive at an average speed of 80 km/h for the journey.
at what time does he expect to arrive in santiago?
workout the answer

The expect time for Alejandro to arrive in Santiago is 1 pm.

Solution:

From the Question, Distance = 540 km

Start time from home = 6:15 am

Average speed = 80km/hr

We need to find the expect time to arrive in Santiago.

Using the time formulae:

where,

s = speed (meters/second)

d = distance traveled (meters)

t = time (seconds)

Substitute the given data in the formule

t =

= 6.75  

= 6 hours 45 minutes

Alejandro sets off from home at 6:15 am. So the expected time is calculated by adding 6:15 am to time found

Arrival Time = 6.15 am + 6hours 45 minutes = 1 pm.

Hence the expect time for Alejandro to arrive in Santiago is 1 pm.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

probably .5

i can on others if necessary.