1.) Let's say that the circle on the graph below represents x. The arrow is pointing to all the numbers greater than x, which happens to be on -2. If it points right, this means that x can equal to any number greater than -2. So your answer is x > -2.
2.) For inequalities such as these, you can simplify just like what you do for normal equations. Let's isolate x.
![x - 7 > 10](https://tex.z-dn.net/?f=x%20-%207%20%3E%2010)
--> ![x > 10 + 7](https://tex.z-dn.net/?f=x%20%3E%2010%20%2B%207)
---> ![x > 17](https://tex.z-dn.net/?f=x%20%3E%2017)
3.) ![3x \leq 21](https://tex.z-dn.net/?f=3x%20%5Cleq%2021)
--> ![\frac{3x}{3} \leq \frac{21}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B3x%7D%7B3%7D%20%5Cleq%20%20%5Cfrac%7B21%7D%7B3%7D)
---> ![x \leq 7](https://tex.z-dn.net/?f=x%20%5Cleq%207)
4.) ![5a - 2 < 18](https://tex.z-dn.net/?f=5a%20-%202%20%3C%2018)
--> ![5a < 18 + 2](https://tex.z-dn.net/?f=5a%20%3C%2018%20%2B%202)
---> ![5a < 20](https://tex.z-dn.net/?f=5a%20%3C%2020)
----> ![\frac{5a}{5} < \frac{20}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B5a%7D%7B5%7D%20%3C%20%5Cfrac%7B20%7D%7B5%7D)
-----> ![a < 4](https://tex.z-dn.net/?f=a%20%3C%204)
5.) ![2t + 8 \geq -4(t + 1)](https://tex.z-dn.net/?f=2t%20%2B%208%20%5Cgeq%20-4%28t%20%2B%201%29)
--> ![2t + 8 \geq -4t - 4](https://tex.z-dn.net/?f=2t%20%2B%208%20%5Cgeq%20-4t%20-%204)
---> ![2t + 4t \geq -8 - 4](https://tex.z-dn.net/?f=2t%20%2B%204t%20%5Cgeq%20-8%20-%204)
----> ![6t \geq -12](https://tex.z-dn.net/?f=6t%20%5Cgeq%20-12)
-----> ![t \geq -2](https://tex.z-dn.net/?f=t%20%5Cgeq%20-2)
Answer:
![2\frac{9}{10} or\frac{29}{10}](https://tex.z-dn.net/?f=2%5Cfrac%7B9%7D%7B10%7D%20or%5Cfrac%7B29%7D%7B10%7D)
Step-by-step explanation:
Hope this helps! Have a great day ahead. Happy halloween :) Stay Safe <33
7^2+7=56. 7^2 is 49. 49+7 is 56.
Answer:
Step-by-step explanation:
circumference=2πr
=2*3.14*2
=12.56 km
since it's 38 the last number is in the ones place which equals just 8