Please help me find what y equals i need help, thank you so much, god bless you.
2 answers:
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Answer:
Step-by-step explanation:
<u>Quadratic Function</u>
The quadratic function can be expressed in the following form:
Where a is a real number different from 0, and x1, x2 are the roots or zeroes of the function.
From the conditions stated in the problem, we know
x_1=1+\sqrt{2}, \ x_1=1-\sqrt{2}
Substitute in the general formula above:
Operate the indicated product
To find the value of a, we use the y-intercept which is the value of y when x=0, thus
It follows that
Thus, the required quadratic function is
Or, equivalently
Given:
Volume of cubical tank = cubic meters.
To find:
The length of a side of the water tank.
Solution:
The volume of a cubical tank is:
Where, a is the side length.
It is given that the volume of cubical tank is cubic meters. So,
Taking cube root on both sides, we get
Therefore, the length of a side of the water tank is 2 meters.