Apolice car passed a truck which was traveling at 80km/h and 6 minutes (1/10 hour) later was 3 km ahead of the truck. what was the speed of the police car?

Speed of Police Car = 110 km per hr

Step-by-step explanation:

Speed of Truck S(t) = 80 km p h

Distance = speed x time

Hence distance covered by truck in hours

D(t)=8 km

Distance covered by  police car = 3 km more than that of Truck

D(c) = 8+3=11 km

Time taken =

Speed =

Replacing those values

Speed =

Speed =

Speed = 110 kmph

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10