Answer:
78.5 inches
Step-by-step explanation:
The formula for the circumference of a circle is
.
So the circumference of this circle is
(in)
4k-6=-2k-16-2
4k-6=-2k-18
6k-6=-18
6k=-12
k=-2
Answer:
Set up an equation equal to <span>180o</span>
Explanation:
<span>3x+3x+6x=180</span>
<span>12x=180</span>
<span>x=<span>18012</span>=15</span>
So, the measure of the angles are:
<span>3x=3×15=45</span>
<span>3x=3×15=45</span>
<span>6x=6×15=<span>90</span></span>
Answer:
2x+20+3x+10 = 180 (int. angles, parallel)
5x+30 = 180
5x=150
x=30