Answer:
Prob [All marbles are red] = 0.0686 ;
Prob [None marble is red] = 0.1470
Step-by-step explanation:
Prob [All marbles are red] :-
= Prob(1st red marble & 2nd red marble & 3rd red marble)
= 8/18 x 7/17 x 6/16
= 0.0686
Prob [None marble is red] :-
= Prob (1st marble not red & 2nd marble not red & 3rd marble not red)
= 10/18 x 9/17 x 8/16
= 0.1470
Let's do this backwards...
17-5=12
12/2=6
Answer: 6
The sequence is going down by 4 each term, if you start at zero and go to the 30th term the number would be -120, now if you add the initial number 11 you get -109 which is your 30th term, this method only works with linear sequences.
Answer: 10.3 pounds of CO2 is produced
Step-by-step explanation:
Assuming there are 30 days in a month, if the microwave is run for 10 minutes per day, then the number of minutes for which the microwave is run in a month is
30 × 10 = 300 minutes
We would convert from minutes to hours
60 minutes = 1 hour
Therefore,
300 minutes = 300/60 = 5 hours
Also,
1000 watts = 1 kW
Therefore,
1500 watts = 1500/100 = 1.5kw
Therefore, the number of kWh is
1.5 × 5 = 7.5 kWh
If 1.37 pounds CO2 per kWh, then
If 1kWh = 1.37 pounds CO2, then
7.5 kWh = 7.5 × 1.37 = 10.3 pounds rounded to the nearest tenth