7y + 10x = 99
y - x = 2
y = 7 , x = 5
Answer:
12.56 feet
Step-by-step explanation:
The perimeter of a shape is the sum of all its side.
Since circle doesn't have "sides", the perimeter is the length of the whole circle. This has the name "circumference".
The circumference of a circle has the formula:
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
Where
C is the circumference (perimeter of a circle)
r is the radius
Given,
r = 2 feet
We substitute and find the circumference, using 3.14 as
,
![C=2\pi r\\C=2(3.14) (2)\\C=12.56](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r%5C%5CC%3D2%283.14%29%20%282%29%5C%5CC%3D12.56)
Hence, the circumference is 12.56 feet
Jury duty is where you have to server your duty being on a jury for a court case. On a jury duty, you vote if you think the person on trial is guilty or not.
-Steel jelly
Answer:
Step-by-step explanation:
From the information given:
For Adult Men
Mean
= 69.5
Standard deviation
= 2.4
observed value X = 74
For Adult Women
Mean
= 63.8
Standard deviation
= 2.6
observed value X = 70
Therefore ; the values for their z scores can be obtained in order to determine who is more unusually tall within his or her respective sex
For Adult Men :
![z = \dfrac{X- \mu}{\sigma}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7BX-%20%5Cmu%7D%7B%5Csigma%7D)
![z = \dfrac{74- 69.5}{2.4}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7B74-%2069.5%7D%7B2.4%7D)
![z = \dfrac{4.5}{2.4}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7B4.5%7D%7B2.4%7D)
z = 1.875
For Adult Women :
![z = \dfrac{X- \mu}{\sigma}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7BX-%20%5Cmu%7D%7B%5Csigma%7D)
![z = \dfrac{70- 63.8}{2.6}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7B70-%2063.8%7D%7B2.6%7D)
![z = \dfrac{6.2}{2.6}](https://tex.z-dn.net/?f=z%20%3D%20%5Cdfrac%7B6.2%7D%7B2.6%7D)
z = 2.3846
Thus; we can conclude that , the women is more unusually tall within his or her respective sex