Answer:
x = 5
Step-by-step explanation:
Since the triangle is right with hypotenuse of 13
Use Pythagoras' identity to solve for x
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 12² = 13²
x² + 144 = 169 ( subtract 144 from both sides )
x² = 25 ( take the square root of both sides )
x = 
= 5
Answer:
7.41, 7.6, 745
Step-by-step explanation:
90 Degree Or 45 Degree Not really sure But I would really choose not 90degree
Answer:
-4
Step-by-step explanation:
Given vertex, the axis of symmetry is x = h.
Answer:
Step-by-step explanation:
The top triangle is similar to the whole triangle because of AAA
Then we know that the corresponding sides are similar
9/81=(3x-20)/(3x-20+56)
1/9=(3x-20)/(3x+36)
cross multiply
9(3x-20)=3x+36
27x-180=3x+36
24x=216
x=9
