Answer:
x=11
Step-by-step explanation:
Answer:

Step-by-step explanation:
<u>Step 1: Add 4 to both sides
</u>



Answer: 
Answer:
The value of A is 20
Step-by-step explanation:
To find the answer, note that all triangles have a interior degree measurement of 180. Set the sum of the angles equal to 180.
71x - 1 + 20x + 90 = 180
91x + 89 = 180
91x = 91
x = 1
Now we can use this in the A angle to find the value.
A = 20x
A = 20(1)
A = 20
Answer:
r= 13ft
Step-by-step explanation:
You are looking for the radius
The Area of a circle is
πr2=530.66
(3.14)r2=530.66
Divide both sides by 3.14
r2=169
Square root both sides to get radius
r=13 feet
<span>m angle 2 = a°, m angle 3 = b°, m angle 4 =
m<4 = m<2 + m<3
m<4 = </span>a + b
answer
<span>a + b</span>