That is a 30 60 90 triangle.
Read about those here: http://www.1728.org/trig2.htm
Answer:
Positive.
Step-by-step explanation:
When you see two negative signs directly next to each other (as shown in the given expression), it will become a positive sign:
7 - (-4) = 7 + 4 = 11
Positive is your answer.
* To be fair, even if there is only one negative sign, the answer will still be positive, however, I am assuming you are suggesting only the sign, and not the answer.
~
Answer:
12
Step-by-step explanation:
4 and 12 only share 12 which is the lowest number :D
1. 17
2. 21
3. 25
4. 29
5. 33
Just take the 13, then add 8, then subtract 4, then with what you got keep going on to the next term.
