A jewelry maker needs 5 inch pieces of wire from sections that are each 4 feet in length. What is the greatest number of 5 inch
1 answer:
For this case we have that by definition:
1 foot equals 12 inches
Then, the sections measure:
1ft ------------> 12in
4ft ------------> x
Where "x" represents the inches of each section.
Thus, each section measures 48 inches.
If the pieces of wire to be removed must be 5 inches each, then from a section they are removed:
Now, from each section you can remove 6 pieces of wire.
Then, from 6 sections, it takes pieces of wire.
Answer:
36
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Considering the definition of zeros of a function, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.
<h3>Zeros of a function</h3>The points where a polynomial function crosses the axis of the independent term (x) represent the so-called zeros of the function.
In summary, the roots or zeros of the quadratic function are those values of x for which the expression is equal to 0. Graphically, the roots correspond to the abscissa of the points where the parabola intersects the x-axis.
In a quadratic function that has the form:
f(x)= ax² + bx + c
the zeros or roots are calculated by:
The quadratic function is f(x) = x² + 4x +9
Being:
- a= 1
- b= 4
- c= 9
the zeros or roots are calculated as:
and
If the content of the root is negative, the root will have no solution within the set of real numbers. Then has no solution.
Finally, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.
Learn more about the zeros of a quadratic function:
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