I NEED HELP PLEASE, THANKS! :)

Hey there! :)

Step-by-step explanation:

In rectangular coordinates, the form is:

(r·cosθ, r·sinθ)

In this instance:

Polar coordinates: (9, 150°). Use the coordinates above to solve for the rectangular coordinates.

(r · cos 150°, r· sin 150°)

(9 · cos 150°, 9· sin 150°)

cos 150° = -√3/2

sin 150° = 1/2

Plug these values into the equation:

(9 · (-√3/2), 9 · 1/2)

Multiply and simplify:

(-9√3/2, 9/2)

Therefore, the coordinates in rectangular form are:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23