Answer:
2, 1/2
Step-by-step explanation:
Arithmetic mean of two numbers is given as
Here a=x and b=1/x
Answer:25
Step-by-step explanation:
10 plus 9+4+2 will give you 21 and it will have 4 yellow ones left
Answer:
(3,1) because x is 3 and y is 1.
Step-by-step explanation:
x+2y=5
3x+5y=14
Multiply first equation by 3:
3x+6y=15
3x+5y=14
Subtract 3x:
1y=1
Therefore, y = 1
Plug it back into 1st equation:
x+2(1)=5
x+2=5
Therefore, x = 3
Judging from your answers, it looks like (3,1) because x is 3 and y is 1.
I hope this helped!
Answer:
0.68
Step-by-step explanation:
Given :
Mean = 67
Standard deviation = 17
Probability that X is between 50 and 84
According to the empirical rule :
1 standard deviation from the mean = 68%
2 standard deviations from the mean = 95%
3 standard deviations from the mean = 99.7%
Evaluating the number of standard deviations from the mean:
50 = 67 - 17 = 1 standard deviation
84 = 67 + 17 = 1 standard deviation
Hence ;
50 < X < 84 is 1 standard deviation from the mean which is 68%
Hence, Probability that x is between 50 and 84 is 0.68