To convert from rectangular coordinates (x,y) to polar coordinates (r, θ), the following equations should be used:
r = sqrt( x^2 + y^2)
<span>θ = tan^-1 (y/x)
</span>
Substituting (-3,3) accordingly to the equations, we obtain r equal to 3*sqrt(2) and θ equal to -π/4. Thus, the polar coordinates equivalent to (-3,3) is (3*sqrt(2), -π/4).
1 pint is equal 16 oz, so 16/0.75 is approximately 21.33 days so it would last 21 days.
B is the correct answer. find the total for the soap and the total for the shampoo and conditioner, add those together then add tax.
