Answer:
15
Step-by-step explanation:
Angle c is 180 - 146 = 34
All 3 angles add to 180:
(5y + 3) + (4y + 8) + 34 = 180
9y + 45 = 180
9y = 135
y = 15
The statement is always true because right angles measure 90 degrees and if you add them you get 180 and supplementary angles are angles that add up to 180.
Hope this helps :)
A. ASA similarity theorem
B. SSS similarity theorem
Answer:
The height of the triangle is 3.2 cm.
Step-by-step explanation:
The area of the triangle = 
Base of the triangle = 10 cm
Height of the triangle = h cm
Area of the triangle = 
h = 3.2 cm
The height of the triangle is 3.2 cm.
Answer:
x=2 : )
Step-by-step explanation:
4(3x-1)=20
12x-4=20
12x=24
x=2
