The ratio of boys to girls in mr. greens class is 4 to 5. there are 8 boys in the class. how many girls in the class

10

Step-by-step explanation:

 B/G = 4/5

 8/G = 4/5     Multiply each side by 5

40/G = 4        Multiply each side by G

  40 =  4G      Divide each side by 4

    G =  10

There are 10 girls in the class.

Check:

8/10 = 4/5

4/5  = 4/5

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.

here is your mark brainliest