The map coordinates of a campground are (1, 4), and the coordinates of a fishing pier are (4,7). Each unit on the map represents 1 kilometer. If Alejandro walks in a straight line from
the campground to the pier, how many kilometers, to the nearest tenth, will he walk?
4.2 kilometers
3.5 kilometers
12.1 kilometers
6.0 kilometers

A

Step-by-step explanation:

So, let’s find the distance between the two points.

We will use the distance formula: “

We will let (1, 4) be (x₁, y₁) and (4, 7) be (x₂, y₂). Substitute:

Evaluate:

Evauate:

So, the distance between the two points is 4.2 units.

Since each unit is equivalent to one kilomeer, Alejandro wil need to walk approximately 4.2 kilometers.

So, our answer is A.

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.