Answer:
1/3
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
A probability of the complement of an event is 1 subtracted by the probability of the event.
Probability of rolling a number less than 5:
6 numbers(from 1 to 6), of which 4(1,2,3,4) are less than 5. So
p = 4/6 = 2/3
Probability of the complement of rolling a number less than 5:
1 - 2/3 = 1/3
So 1/3 is the answer
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Answer:
no solution
Step-by-step explanation:
x+y=7
x=3-y
Substitute the second equation into the first
(3-y) +y = 7
Combine like terms
3 = 7
This is never true so there is no solution
2x + 7 = 3x - 7
3x - 2x = 7 + 7
x = 14
2x + 7 + 12y + 1 = 180
2(14) + 12y + 8 = 180
28 + 12y + 8 = 180
36 + 12y = 180
12y = 180 - 36 = 144
y = 144/12 = 12
x = 14, y = 12