Answer:
<h2><u>

</u></h2>
Step-by-step explanation:
Using Pythagoras Theorem:

⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
Answer:
NOT CONGRUENT - DIFFERENT
Step-by-step explanation:
For triangles to be congruent the angles have to be the same, in other words, any transformation would work, but a completely different triangle would not.
Answer:
C
Step-by-step explanation:
Morgages is spelled mortgages
Answer:
49x2−4y2
Step-by-step explanation:
7x(7x)+7x(−2y)+2y(7x)+2y(−2y)
Answer:
20 meters long and 10 meters wide
Step-by-step explanation:
since the perimeter is 60 and one side of it is 20 then you multiply 20 by 2, 40, to get both sides. Then you subtract 40 from 60 leaving the other two sides as 20, meaning that if you divide 20 by 2 you can find that the width of the dance floor is 10 meters long.