Answer:
1) 
2) 
3) 
4) 
Step-by-step explanation:
Let's assume that we have the following four cases in the figure attached.
In order to create inequalities related to the possible angles between the two triangles for each case we ned to use the following theorem:
Hinge theorem""If two sides of one triangle are congruent to two sides of another triangle, and the included angles are not congruent, then the longer third side is opposite the larger included angle"
Part 1
For this case we have that the angle 
and from the graph we know that the angle
so then we have that angle 
so then we can conclude from the theorem above that:
Part 2
For this case we have that the angle 
and from the graph we know that the angle
so then we have that angle 
so then we can conclude from the theorem above that:
Part 3
For this case we have that the angle 
and from the graph we know that the angle
so then we have that angle 
so then we can conclude from the theorem above that:
Part 4
For this case we have that the angle 
and from the graph we know that the angle
so then we have that angle 
so then we can conclude from the theorem above that:
A) Here, sum of two non-adjacent angles: 52 + 25 = 77
Now, ∠3 = 180 - 77 [ sum of all angles in a triangle is 180 ]
so, ∠3 = 103
Now, ∠3 + ∠4 = 180 [ Supplementary angles ]
So, ∠4 = 180 - ∠3
∠4 = 180 - 103 = 77
∠4 = 77 [ which is sum of two non-adjacent angles ]
....Hence proved.
b) m∠4 = 77
[ Solved in previous section ]
Hope this helps!
The answer is £91.50 because if you multiply 9.10 and 10 that is £91. Then 1/2 is .50 in numeral form. So the total is £91.50.
