At a birthday party, all of the guests chose either vanilla or chocolate ice cream to be served with the cake for dessert. for their choices, 21 guests had vanilla ice cream and 9 guests had chocolate. what percent of the guests had chocolate ice cream?

0.3 or 30

Step-by-step explanation:

Unknown if that is right but hopefully it is correct. :)

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi