Let the cost of a chicken be x and the cost of a duck, y, then
50x + 30y = 550 . . . (1)
44x + 36y = 532 . . . (2)
(1) x 6 ⇒ 300x + 180y = 3,300 . . . (3)
(2) x 5 ⇒ 220x + 180y = 2,660 . . . (4)
(3) - (4) ⇒ 80x = 640
⇒ x = 640 / 80 = 8
From (1): 50(8) + 30y = 550
⇒ 30y = 550 - 400 = 150
⇒ y = 150 / 30 = 5
Therefore, the price of a chicken is $8 and the price of a duck is $5.
The degree of a polynomial is the highest power anything is raised to. so x+3 is the same as x(^1) + 3
<span>so first degree. </span>
<span>x^2 +3 is a second degree</span>
In standard for its either 3 5/100 or 3.05
Answer:
Step-by-step explanation:
the second one , why? because 7a-12a=-5a
4 - 8 = -4
