Simplifying 0.20 = x^2 / (25 - x):
Multiply both sides by (25 - x)
0.20(25 - x) = x^2
Distributing 0.20:
5 - 0.20x = x^2
Placing all equations on to one side:
x^2 + 0.20x - 5 = 0
Where:
a = 1
b = 0.20
c = -5
Answer:
small packet: 1.56/22=£0.071
medium: 2.87/38=£0.076
large: 4.67/65=£0.072
small packet is best as it has the lowest price per nail
Answer: 5w^2 (15w ^3 -7)
Good luck !
Answer:
$ 35.96
Step-by-step explanation:
Let x be the cost ( in dollars ) of 4 ounces of the pecans,
So, the ratio of the cost and ounces needed = 
Also, the cost of 1 ounces of pecans is $ 8.99,
Thus, the ratio of the cost and ounces needed = 
Hence, we can write,

Which is the required proportion,
By cross multiplication,
x = 4 × 8.99 = 35.96
Therefore, $ 35.96 is the cost of 4 ounces of the pecans.
Answer:
I think true.
Step-by-step explanation:
Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.