Answer:
Supplementary angles
Step-by-step explanation:
Angles 1 and 2 form a straight line which is 180 degrees.
They are supplementary angles
1. A = 2ab + 2ac = 2bc
2. A = 2b(a +c) + 2ac
3. 2b(a + c) = A - 2ac
4. b = (A - 2ac) / 2(a + c)
Answer:
78%
Step-by-step explanation:
39/50 x2 → 78/100 so 78%
4+2+8+6 = 20 total
8 purple
so 8/20 reduced to 2/5 chance for a purple
then there will be 19 left
6 blue =
6/19 probability of having a blue one
2/5 * 6/16 = 12/80 reduces to 3/20 probability total
