They are congruent because the right angles are congruent, the dashed lines are congruent, and the angles that are attached are congruent. The attached angles are congruent because they share two sides
A power of ten is any of the integer powers of the number ten so its kinda like 10 multiplied by itself a certain times.
Answer:
11
Step-by-step explanation:
2-8 you need to minus the first number
Use the slope equation:

Plug in the points (2, 15) and (0, -1).

⇒

= 8
The slope of the line is 8.