Answer:
1. x = 30
2. x = 39
Step-by-step explanation:
1.
4x and ( 3x + 30 ) are alternate exterior angles,
Alternate exterior angles are equal.
4x = 3x + 30
4x - 3x = 30
x = 30
2.
x and ( 3x + 24 ) are co - interior angles.
Sum of co - interior angles is 180,
x + 3x + 24 = 180
4x + 24 = 180
4x = 180 - 24
4x = 156
x = 156 / 4
x = 39
First row: Not independent because without replacement
Second row: Independent (same coin)
Third row: Not independent (without replacement)
Fourth row: Independent (with replacement)
60 people/15 minutes * 60 minute/hr = 240 people/hr
240 people/hr *6 hrs =1440 people
Answer: 1440 people
Number 7
3x-40 = x
3x-x = 40
2x = 40
x= 20
v^2 = x+30
v^2= 20+30 = 50
v= radical 50 = 5 radical 2
