Answer:
y = -11
Step-by-step explanation:
Answer:
Step-by-step explanation:
This is a special right triangle that has 30, 60 and 90 degress corners. Because it is a special triangle, it also has side length values which always consistent relationship with one another.
Side opposite the 30° angle: x
Side opposite the 90° angle: 2x
So, 
Then use Pythagorean theorem. 




Answer:
set width as a, so length is 2a-4
a(2a-4)=70
2a^2 - 4a = 70
a^2 - 2a = 35
a^2 - 2a + 1 = 36
(a-1)^2 = 36 Because width can not be negative so we only take possitive answer.
(a-1) = 6
a = 7
2(7) - 4
=14-4
=10
Length = 10
Width = 7
Answer:
false
Step-by-step explanation:
x can be equal to 2 or -2 since square root of a number can't be negative