Plastic toy with a mass of 18 grams occupies 9.0cm3 of space its density is a) 0.3 g/cm3 b) 1.5 g/cm3 c) 2.0 g/cm3 d) 6.0 g/cm3

c) 2.0 g/cm³

Step-by-step explanation:

The units of density (g/cm³) tell you to divide the mass by the volume.

... (18 g)/(9.0 cm³) = (18/9.0) g/cm² = 2.0 g/cm³

c

step-by-step explanation:

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.