X^2 + x = 5
hope that helps
................
Answer:

Step-by-step explanation:
Given


Required
Determine the coordinates of S
Midpoint is calculated as:

Where:


Substitute these values in the above formula:

Multiply through by 2


By direct comparison:
and 
Solving for x2



Solving for y2



Hence, the coordinates of S is: 
The pair of triangles that can be <span>proved congruent by SSS theorem would be the triangles where the corresponding sides of each triangle being equal. From the images attached,
http://assets.openstudy.com/updates/attachments/50a1326be4b05517d536a6cf-geomentry-1352741498116-653....
http://assets.openstudy.com/updates/attachments/50a1326be4b05517d536a6cf-geomentry-1352741506883-653...
I think the correct answer would be the triangles in F.</span>
The tax that Mark had to pay is calculated by multiplying the base price of the video game and the decimal equivalent of the tax percentage. That is,
tax = ($49.99) x (0.08)
= $3.9992
Thus, Mark had to pay approximately $4 for the tax.