If two events are dependent on each other you have to multiply the probability of the first event times the probability of the second event.
first count all the marbles here there are 21
you are asked about picking two green marbles there are 7 out of the 21 total.
The first event would be 7/21
The second event would be 6/20 (since you didn't replace and you took out a green one)
now multiply your two fractions together:
and you get 1/10.
50+30y
It is 30y because there are 7 days in a week and each week you deposit $5 so 5*7 is 30.
Answer:
6
Step-by-step explanation:
Slope intercept form is y=mx+b, with m being the slope and be being the y intercept, so when you look for what b is in the equation for y=-3x+6 then 6 is b.
Answer:
1: -12
2: 3 7/9
3: 7
Step-by-step explanation:
Alternate exterior angles because the are OUTSIDE of the parallel lines