Answer:
Step-by-step explanation:
Hope this helps and pls do mark me brainliest if you can:)
If you would like to solve y = x - 4 and 2 * x + y = 5, you can do this using the following steps:
y = x - 4
2 * x + y = 5
_____________
2 * x + (x - 4) = 5
2 * x + x = 5 + 4
3 * x = 9 /3
x = 9 / 3
x = 3
y = x - 4 = 3 - 4 = -1
The correct result would be x = 3 and y = -1.
On the right side, there are
• 2•2 = 4 atoms of Nb
• 2•5 = 10 atoms of O
so among the reactants on the left, the reaction is balanced as
4 Nb + 5 O₂ → 2 Nb₂O₅
We can solve for the value of x using the formula:
V = l w h
where,
h = x the size of the cut since it would form the walls of
the rectangle
<span>w = 8.5 – 2x =
it is subtracted by 2x since two sides will be cut</span>
l = 11 – 2x
Substituting:
V = x (8.5 − 2x) (11 − 2x)
Expanding the expression:
V = 93.5 x – 39 x^2 + 4 x^3
To solve the maxima, we have to get the 1st
derivative dV / dx then equate to 0. dV / dx = 0:
dV / dx = 93.5 – 78 x + 12 x^2
0 = 93.5 – 78 x + 12 x^2
We get:
x ≈ 1.585 in and x ≈ 4.915 in
Therefore Anya’s suggestion of 1.5 inches would create the
larger volume since it is nearer to 1.585 inches.
There can be different volumes since volume refers to the
amount of space inside the rectangle. They can only have similar perimeter and
surface area, but not volume.
It is restricted to <span>0
in. < x < 4.25 in. because our w is 8.5 – 2x. Going beyond that value
will give negative dimensions.</span>
