Making an equation,
Let heralds age be x
10+6x=4x+40
Seperating constants and variables,
6x-4x=40-10
2x=30
x=30/2
=15
Heralds age is 15,
Substitute x with 15 in the equation for rechecking
Answer:
30
19.5
16
Step-by-step explanation:
you need to find the rule, so divide 12 by 8 and see the factor is 1.5, so just multiply all the numbers by 1.5 to get the second column, and for the last one divide the number by the factor
Answer:
supplementary
x = 146 degrees
Step-by-step explanation:
Answer:
87.29%
Step-by-step explanation:
Given: Mean= 68.8 inches
Standard deviation= 2.8 inches
Now, finding the percent of the men in the sample were greater than 72 inches.
We know, z-score= ![\frac{x-mean}{standard\ deviation}](https://tex.z-dn.net/?f=%5Cfrac%7Bx-mean%7D%7Bstandard%5C%20deviation%7D)
z-score= ![\frac{72-68.8}{2.8}](https://tex.z-dn.net/?f=%5Cfrac%7B72-68.8%7D%7B2.8%7D)
⇒ z-score= ![\frac{3.2}{2.8} = 1.14](https://tex.z-dn.net/?f=%5Cfrac%7B3.2%7D%7B2.8%7D%20%3D%201.14)
∴ z-score= 1.14
Next, using normal distribution table to find percentage.
Coverting 0.8729 into percentage= ![0.8729\times 100](https://tex.z-dn.net/?f=0.8729%5Ctimes%20100)
We get the percentage as 87.29%
Hence, 87.29% of the men in the sample were greater than 72 inches.
Answer:
79.38
Step-by-step explanation:
49%=0.49
0.49*162=79.38