Suppose set a has 4 elements .what is the least number of elements a subset of a. can have

1 element

Step-by-step explanation:

Call B a set of n elements.

We can say that B is a subset of A if each element of B is also in A. This is written as:

B ⊆A

If a Set B contains all the elements of A, we can also say that B is a subset of A, where B = A.

Therefore, if set A has four elements, then for B to be a subset of A, the number of elements in B must be less than or equal to 4 but greater than 0. {1, 2, 3, 4}

Finally, according to the definition, B must have at least 1 element of 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.

rotation point l

step-by-step explanation: