You were right, its the second choice CA=CB+BA
Answer:
h = 110°
Step-by-step explanation:
1) A pentagon has 5 sides that sum up to 540°. We know it is 540° because of this formula that is used to find the sum of the interior angles of any polygons. <u>n</u> is the number of sides.
= (n - 2) x 180
= (5 - 2) x 180
= 3 x 180
= 540°
2) We can now set up an equation.
70 + 100 + 120 + 140 + h = 540
430 + h = 540
h = 540 - 430
h = 110°
30=1/2(12)(h)
30=(6)(h)
h=5
Plug in the X's on the table into the equation and that will give you the Y for each number.
$56=70%
10%= 56 divided by 7=8
10% = 8
8 x 10= $80 = 100%
Answer=$80