3-5 is equal to -3 not positive 3 cause it's mines, less than 0.
Hope this help!
If it's wrong sorry cause I understand the question like this
3a.
Explanation:
the mean, first of all, is the average. so, you need to find the average between 2 ans 4 since it has the same label. 2+4=6. 6/2=3
Answer: 3a
Answer:
the ordered triple of these equations will be:
(x, y, z) = (6, 1, 5)
Step-by-step explanation:
Given the equations
As
We can get the value of x by adding the first and third equation
so
so the equations become
Putting x = 6 and y=1 in the first equation 
Therefore, the ordered triple of these equations will be:
(x, y, z) = (6, 1, 5)
Answer:
B. 0.602%
Step-by-step explanation:
Probability is essentially (# times specific event will occur) / (# times general event will occur). Here, we have a few specific events: draw a quarter, draw a second quarter, draw a penny, and draw another penny. The general event will just be the number of coins there are to choose from.
The probability that the first draw is a quarter will be 4 / (4 + 8 + 9) = 4/21.
Since we've drawn one now, there's only 21 - 1 = 20 total coins left. The probability of drawing a second quarter is: (4 - 1) / (21 - 1) = 3/20.
The probability of drawing a penny is: 9 / (20 - 1) = 9/19.
The probability of drawing a second penny is: (9 - 1) / (19 - 1) = 8/18.
Multiply these four probabilities together:
(4/21) * (3/20) * (9/19) * (8/18) = 864 / 143640 ≈ 0.602%
The answer is B.
Probability is going to be 8/12 2/3 simplified
