Step-by-step explanation:
x+100°=180°{being straight angle}
x=180-100
x=80°
again,
45°+x+y=180°{sum of angle of triangle}
45+80+y=180
y=180-125°
y=55°
hope it helps.
Answer:
Your right?
Step-by-step explanation:
its the only answer that actually qualifies. Although any number above 20 would work I guess. there are no requirements.
Answer:
2
= 2
= 2
lb.
Step-by-step explanation:
One line represents 1/16 lb.
a. Use the inclusion/exclusion principle.
![P(A_1\cap A_2)=P(A_1)+P(A_2)-P(A_1\cup A_2)=0.55+0.65-0.80=0.40](https://tex.z-dn.net/?f=P%28A_1%5Ccap%20A_2%29%3DP%28A_1%29%2BP%28A_2%29-P%28A_1%5Ccup%20A_2%29%3D0.55%2B0.65-0.80%3D0.40)
b. By definition of conditional probability,
![P(A_2\mid A_3)=\dfrac{P(A_2\cap A_3)}{P(A_3)}=\dfrac{0.50}{0.70}\approx0.7143](https://tex.z-dn.net/?f=P%28A_2%5Cmid%20A_3%29%3D%5Cdfrac%7BP%28A_2%5Ccap%20A_3%29%7D%7BP%28A_3%29%7D%3D%5Cdfrac%7B0.50%7D%7B0.70%7D%5Capprox0.7143)