Which expression is equivalent to (x^-4y/x^-9y^5)^-2 ? assume x ≠ 0, y ≠ 0
a y^8/x^10
b x^5/y^7
c x^5/y^4
d x/y^7

which expression is equivalent to 28p^9q^-5/12p^-6q^7 assume p ≠ 0,q ≠ 0
a 2/p^15q^12
b 7p15/3q12
c 2q^12/p^15
d 7p^15q^12/3

which expression is equivalent to (5ab)^3/30a^-6b^-7 ? assume a ≠ 0, b ≠ 0
a a^7b^10/6
b 125a^18b^21/30
c 25a^3b^4/6
d 25a^9b^10/6

Question 1: Which expression is equivalent to (x^-4y/x^-9y^5)^-2 ?

Hence, option A is correct i.e. .

Question 2: Which expression is equivalent to 28p^9q^-5/12p^-6q^7 ?

Hence, option B is correct i.e. .

Question 3: Which expression is equivalent to (5ab)^3/30a^-6b^-7 ?

Hence, option D is correct i.e. .

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.

need more information

step-by-step explanation: