An auto mechanic uses a hydraulic lift to raise a 20,000 N car. If the area of the input piston is 100 cm?, and the output piston has an area of 4000 cm?, what force must be exerted on the input piston to raise the car? A 5N
B) 500 N
C) 12,500 N
D) 800,000 N

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

so, converting firstly the mixed fractions to improper fractions and then "adding".

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.