All triangles interior angles equal 180
So these 3 angles = 180
The probability is 6/9 or 66.6%
Answer:
y = ± 
Step-by-step explanation:
Given
x = a - 2by² ( add 2by² to both sides )
x + 2by² = a ( subtract x from both sides )
2by² = a - x ( divide both sides by 2b )
y² =
( take the square root of both sides )
y = ± 
96/4=24 beads in 1 bracelet
beads in 7 bracelets = 24*7=168