Answer:
x > 2
Step-by-step explanation:
7x +39 > 53
AND
16x + 15 > 31
7x > 14
AND
16x > 16
x > 2
AND
x > 1
And is intersection, which is x > 2
30 dollars because it’s a extra 90 dollars and an extra 3 days so put 30 into 90
Answer:
About 16
Step-by-step explanation:
Multiply 12 by 6 and 5 and you get 360 then divide 5832 by 360 and you get 16
Answer:
220 possible ways
Step-by-step explanation:
Given
--- people
-- posts ![(President, Vice\ President\ and\ Secretary)](https://tex.z-dn.net/?f=%28President%2C%20Vice%5C%20President%5C%20and%5C%20Secretary%29)
Required
Determine the number of selection
Since there is no condition attached, the number of selection is:
![Selection = ^nC_r](https://tex.z-dn.net/?f=Selection%20%3D%20%5EnC_r)
Substitute values for n and r
![Selection = ^{12}C_3](https://tex.z-dn.net/?f=Selection%20%3D%20%5E%7B12%7DC_3)
Apply combination formula
![Selection = \frac{12!}{(12-3)!3!}](https://tex.z-dn.net/?f=Selection%20%3D%20%5Cfrac%7B12%21%7D%7B%2812-3%29%213%21%7D)
![Selection = \frac{12!}{9!3!}](https://tex.z-dn.net/?f=Selection%20%3D%20%5Cfrac%7B12%21%7D%7B9%213%21%7D)
![Selection = \frac{12*11*10*9!}{9!*3*2*1}](https://tex.z-dn.net/?f=Selection%20%3D%20%5Cfrac%7B12%2A11%2A10%2A9%21%7D%7B9%21%2A3%2A2%2A1%7D)
![Selection = \frac{12*11*10}{6}](https://tex.z-dn.net/?f=Selection%20%3D%20%5Cfrac%7B12%2A11%2A10%7D%7B6%7D)
![Selection = \frac{1320}{6}](https://tex.z-dn.net/?f=Selection%20%3D%20%5Cfrac%7B1320%7D%7B6%7D)
![Selection = 220](https://tex.z-dn.net/?f=Selection%20%3D%20220)
<em>Hence, there are 220 possible ways</em>