Answer:
A....... x+y=216 and 2/3x+4/9y=118
Step-by-step explanation:
Answer:
56 trees will make 10000 newspapers.
Step-by-step explanation:
Given:
One tree makes approximately 230 newspapers.
Now, for estimating how many newspapers will be made with 56 trees.
By multiplying
trees with
newspapers we get,
.
And, rounding
to one significant number (1 S.F.) is
.
Therefore, 56 trees will make 10000 newspapers.
Area = 299*34 = 10166 ft^2
Cost = 10166 * 11 = $111,826 (answer)
14. 36x^2 - 16
4(9x^2 - 4) =
4(3x + 2)(3x - 2) <==
15. 3x^2 + 10x - 8
(3x - 2)(x + 4) <==
16. 5x^2 - 16x + 15 = 4x - 5
5x^2 - 16x - 4x + 15 + 5 = 0
5x^2 - 20x + 20 = 0
5(x^2 - 4x + 4)
5(x - 2)(x - 2)
x - 2 = 0....x = 2