Consider the sets below. -u {x|x is any color} -a {x|x is a color of the rainbow} -r {x|x is red, yellow, or blue} is r ⊂ a?

                 Yes R ⊂ A.

Step-by-step explanation:

We are given a set U as:

          --- U= {x| x is any color}

          --- A= {x| x is a color of the rainbow}

We know that a rainbow has seven colors named as VIBGYOR

where V-- Violet

           I-- Indigo

           B-- Blue

           G-- Green

           Y-- Yellow

           O-- Orange

            R-- Red

Also we are given R set as :

       -- R= {x|x is red, yellow or blue}

This means that R is contained in A since all the elements that belong to R also belongs to set A.

Hence, we may say:

       Yes  R ⊂ A

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice