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 answer is B
√3 times as long as the side opposite the 30 degree so the side opposite the 30 degree angle is 5/<span>√3</span> inches long.
use the distributive property
5x(3x+4)
15x^2 +20x
Answer:
or 
Step-by-step explanation:
The given equation is
Let us treat this as a quadratic equation in 
.
where 
The solution is given by the quadratic formula;
We substitute these values into the formula to obtain;
or 
or 
or 
or
