In a quiz progam, 3 questions on sport, 3 question on general knowlegde, and 4 questions on science are print sepraretly pn 10 cards and place upside down. john is asked to select 2 cards at random. what is the probabitly of john selecting 2 question on science

Step-by-step explanation:

Given : Number of questions on sport = 3

Number of questions on General Knowledge = 3

Number of questions on science = 4

Each question printed on separate card , Total cards = 10

Number of ways to select any 2 card out of 10 = →Total outcomes

Number of ways to select any 2 card out of 4 = → Favorable outcomes

Now , the probability of John selecting 2 question on science =

Hence, the required probability is .

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.

step-by-step explanation: