An archaeological site is to be made accessible for viewing by the public. To do this, archaeologists built two straight paths f
rom point A to point B and from point B to point C as shown in the following diagram. The length of path AB is 185 m, the length of path BC is 250 m, and angle B is 125°, diagram not to scale Archaeological Site a. Find the length of AC
1 answer:
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Answer:
-23
Step-by-step explanation:
A quadratic equation is given to us and we are interested in finding the discriminant of the quadratic equation . As we know that ,
If the quadratic equation is in Standard form ,
The discriminant is ,
The given quadratic equation is ,
On comparing it with the Standard form , we have ,
- a = (-3)
- b = 5
- c = (-4)
So that ,
Also note that if D < 0 , then the roots are complex conjugates .
<h3>Hence the discriminant is (-23).</h3>
Equations can be represented on graphs by plotting the corresponding x and y values. The graph of is option (B).
Given that:
First, we check the y intercept of
This is when
So, we have:
This point is represented as:
Next, check the equation when
So, we have:
This point is represented as:
From the list of given options (see attachment).
Only graph B has the and
on its curve.
Hence, option (B) is correct.
Read more about equation of graphs at:
