Convert r = 8cos θ to rectangular form.

This is a circle with radius and center .

Step-by-step explanation:

Recall the following:

We are given .

Multiply both sides by :

Reorder on right and simplify on left:

We can now make some replacements from our "Recall" section:

We can probably leave like this, but sometimes we are required to put in a more identifying form.

This is a circle. I'm going to write in the form .

Subtract on both sides:

We are going to fill those "blanks" in so that we can complete the square for the part.

So our equation is that of a circle with radius and center .

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.

50-38=12

step-by-step explanation: