The x-intercepts of the given quadratic function are -2 and 9.
What is a quadratic function?
A quadratic function is a function represented as, f(x) = ax2 + bx + c, with a, b, and c being integers and a not equal to zero. A parabolic curve represents the graph of a quadratic function.
A polynomial's highest degree reveals how many roots the polynomial has. The values for which the polynomial's numerical value is equal to zero are known as a polynomial's roots (also known as zeros of a polynomial). On a graph, the points where the polynomial's graph and the x-axis cross are the roots (x-intercepts).
Roots of the Quadratic Equation
Due to its degree of 2, a quadratic function can only have a maximum of two real roots. In order to find the roots of a quadratic equation, we equate its factors to 0. Thus, in this case, we have,
(x+2)*(x-9)=0
∴ x+2=0
⇒ x=-2
Similarly,
x-9=0
⇒ x=9
Hence, the x- intercepts of the given quadratic function come out to be -2 and 9.
Learn more about a quadratic function here:
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Answer:
140 miles
Step-by-step explanation:
4 per day for 5 days a week
= 4x5=20 miles a week
For 7 weeks= 20x7= 140 miles
Answer:
1. Movie B
2. Movie C
3. 40 years old
Step-by-step explanation:
Answer:
17
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
Well, 5x+0.5y^2 we'd just have to plug in the numbers.
5(3)+0.5(2)^2
15+0.5(4)
15+2
17
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