Answer:
X=45
Step-by-step explanation:
45+3x=180
180-45=135
135/3=45
x has to be 45
x=45
Question 1:We have a 45-45-90 right triangle with the hypotenuse being the length from one corner to the opposite corner.
Multiply 30 ft with the square root of 2 and use a calculator to help give you numerical value to get your answer.

Your answer is the second choice.
Question 2:The equilateral triangle can be divided into 2 30-60-90 triangles with the longer leg being the altitude. To get half of the side length of the right triangle, divide the altitude by the square root of 3.

The full side length is double of that, which is

.
Multiply that by 3 to get the full perimeter.

Your answer is the third choice. Hope this helps! :)
Answer:
-21n + 16
Step-by-step explanation:
Start with distributive property
-24n + 16 + 3n
Combine like terms
-21n + 16
There is a part of the equation missing so I can't solve completely
Answer:
A: (x = length y = width) x = 2y-3
B: The width equals 7
Step-by-step explanation:
B explanation: using the formula from and the information from B x = 11, 11 = 2y - 3 we add 3 to both sides 14 = 2y and divide by two, 7 = y
Answer:
x = 12
Step-by-step explanation:
Here, we want to find the value of x
To do this, we use one of the circle tangent relationships
we have this as:
8^2= 4(4 +x)
8^2 = 16 + 4x
64 = 16 + 4x
64-16 = 4x
4x = 48
x = 48/4
x = 12