You can focus on the two sub-triangles ABC and ACD
We know that they are both right triangles, because we're given that AC and BD are perpendicular.
The sides AB and AD are the hypothenuses of these triangles, so we know their length through the pythagorean theorem:
But since we're given 
, the expressions for AD and AB are actually the same expression. This proves that AD=AB, and thus that the triangle is isosceles.
Let's group the cubic function:
.
The first two roots are
however to find the last two roots we need to solve the square equation:
. Now we know the discriminator, using the discriminator we're able to find the roots of the equation:
. The roots of the square equation are
and
.
The roots of the cubic function are
,
and
.
The answer is going to be H because if you plug in x from the table it will give you y.
Answer:
In the picture above.
Step-by-step explanation:
Good luck.
Answer:
449.25 units
Step-by-step explanation:
The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the given equation as follows :
...(1)
For maximum profit,
Put dy/dx = 0So,
Now put x = 25.5 in equation (1).
so, the required answer is 449.25 units.
