You decide to take your car on a drive through Canada, where gas is sold in liters and distances are measured in kilometers. Suppose your cars gas efficiency is 38.0mi/gal. How many liters of gas will you need to complete a 305 km trip use? Use the conversions 1gal=3.78L and 1km=0.6214mi.

The answer to your question is 18.9 liters

Step-by-step explanation:

Data

Efficiency = 38 mi/gal

total distance = 305 km

1 gal = 3.78 l

1 km = 0.6214 mi

Process

1.- Convert the total distance to miles

                 1 km 0.6214 mi

              305 km x

                 x = (305 x 0.6214) / 1

                 x = 189. 53 mi

2.- Calculate the gallons needed

                  38 mi 1 gal

               189.53 mi  x

                  x = (189.53 x 1)/38

                  x = 4.988 gal

3.- Convert the gallons to liters

                   1 gal 3.78 l

                4.988 gal x

                   x = (4.988 x 3.78) / 1

                   x = 18.9 l

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11