Let
x---------> represents Martin's sister's age
y--------> represents Martin's age
we know that
--------> equation 
--------> equation 
Substitute equation in equation
![x+[x-6]\leq 22\\2x\leq 22+6\\ x\leq 14](https://tex.z-dn.net/?f=%20x%2B%5Bx-6%5D%5Cleq%2022%5C%5C2x%5Cleq%2022%2B6%5C%5C%20x%5Cleq%2014)
therefore
<u>the answer is</u>
Part a) An inequality that can be used to represent this situation is
![x+[x-6]\leq 22](https://tex.z-dn.net/?f=%20x%2B%5Bx-6%5D%5Cleq%2022%20)
or 
Part b) the oldest age Martin's sister can be is 
years old
Answer:
1. The top choice.
2. The third choice.
3. The third choice.
Step-by-step explanation:
Number one is a line, so it should have two arrows.
Number 2 is a segment, so it should have no arrows.
Number 3 is a ray, so it should have one arrow. (The letters need to be in the same direction as the ray, hence why it is BC and not CB)
Answer:
Step-by-step explanation:
Hi there!
is an irrational number.
Now, what is an irrational number? An irrational number is a number that goes on for ever.
Examples: 
is a surd (an irrational square root)
If we multiply 2 times , we will get an irrational number.
Thus, is an irrational number.
Hope it helps! Enjoy your day!
Answer:
2x+y
Step-by-step explanation:
x-(-x)+y the subtraction sign and negative x cancel and makes the x positive
x+x=y
2x+y
The answer is 347/10, in simplified form its 34 7/10.
In decimal form its 34.7.
