Find the average speed of car if it travels 18km in 20 minutes.

Step-by-step explanation:

Given:

Distance = S = 18 km

Time = t = 20 min = 20/60 = 0.33 hours

Required:

Average Speed = <v> = ?

Formula:

Average Speed = Total Distance Covered / Total Time Taken

Solution:

A . S = 18 / 0.33

A.S = 54 km/hr

0.9km/minute

or

54km/hour

Step-by-step explanation:

18km in 20 minutes = 18km/20min

18km/20min = 0.9km/min

1 hour = 60 minutes

20 minutes = 20/60 = 0.3333 hours

18km/20mins = 18km/0.3333hours = 54km/hour

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

linear pair postulates