The identification of parts A,B andC is illustrated below with their various reasons given.
<h3>What is an equilateral triangle?</h3>
An equilateral triangle is the triangle that has all its sides equal in length and each angle is made up of angle 60°.
Part A = The similar triangle are RGE and PBE
Part B = The triangles selected are similar because it was formed by an interception of the parallel lines of the rectangle GCPR.
Part C= All the sides of the equilateral triangle are the same therefore the distance from B to E and from P to E is the same with BP which is 225ft.
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Change in value = 87 - 42 = 45
percentage change = 45/42 x 100 = 107%
7^2 = 6^2 + 9^2 - 2(6)(9)cos(m)
-68 = 2(6)(9)cos(m)
cos(m) = -0.6296
m = arcos ( -0.6296)
m = 129.0 degrees
Answer:

Step-by-step explanation:
The equation in slope-intercept form is given by:

where
is the slope and
is the y-intercept.
The given line passes through so many points. We can use any two these points to find the slope of the line.
The line passes through
and
.
The slope is given by;
.
.
.
The y-intercept from the graph is 
Our equation finally becomes;

Answer:
x
=
2
±
√
3
Step-by-step explanation: