Answer:
From the graph, the roots of the equation are given below as
These are the points where the curve cuts the x-axis
The y-intercepts of the graph is given below as
Concept:
To find the equation of the graph, we will use the formula below
Hence,
By substituting the values, we will have
Hence,
The function of the graph is
OPTION D is the right answer
Answer:
Similar triangles states the length of the corresponding sides are in proportion.
In a given similar triangles:
Labelled the diagram:
Triangle BAC and triangle DAC are similar.
then;
Corresponding sides:
AB = x units , BC = 5 units, AD = 15 units and DC = BD-BC = 8-5 = 3 units
By cross multiply we get;
Simplify:
Divide both sides by 3 we get;
Simplify:
x = 25 units
Therefore, the value of x is 25 units.
