Answer:
76
Step-by-step explanation:
The sum of the angles of a triangle add to 180
40+ 3x+10 + 2x+20 = 180
Combine like terms
70 + 5x = 180
Subtract 70
70+5x-70 =180-70
5x = 110
Divide by 5
5x/5 = 110/5
x = 22
We want to find BCA
BCA = 3x+10
= 3(22)+10
= 66+10
=76
Answer:
1/2!(12, 2)(10, 5)
Step-by-step explanation:
Let's pick 2 persons for team one. We can do that in (12, 2) ways. Then, let's pick five of the remaining people for team two. We can do that im (10, 5) ways. Five remaining people form team three., because the order of teams foes not matter divide the team by 2! (we have 2 teams with five people). Thus the final answer is 1/2!(12, 2)(10, 5)
Answer: 55/72
Step-by-step explanation:
Answer:
Step-by-step explanation: 5/10=1/2 - if one student are chosen, who plays soccer
4/9 if then the second student are chosen, who plays soccer
1/2*4/9=2/9 the probability that both students play soccer
Answer:it’s B aka 3
Step-by-step explanation: