Answer:
2
Step-by-step explanation:
The easiest thing is to convert it to an improper fraction.
-2 1/9 turns into -19/9. -4 1/9 turns into -37/9.
-19/9 - (-37/9) here you would add because you are subtracting a negative number.
-19/9 + 37/9 change it to positive and then add.
-19+37=18
it was 18/9. that simplified is 2.
Answer:
2/3 can't be divided because it's in its lowest form so you can reduce it
Answer:
The tree is 12 feet tall
Step-by-step explanation:
Let a represent the length of where the bird was sitting to the oak tree
let b represent the height of the tree
let c represent the length at which the bird flew
by pythagoras theorem
c²=a²+b²
b²=c²-a²
![b = \sqrt{ {c}^{2} - {a}^{2} }](https://tex.z-dn.net/?f=b%20%3D%20%20%5Csqrt%7B%20%7Bc%7D%5E%7B2%7D%20-%20%20%7Ba%7D%5E%7B2%7D%20%20%7D%20)
subtitute in the values
![b = \sqrt{ {15}^{2} - {9}^{2} }](https://tex.z-dn.net/?f=b%20%3D%20%20%5Csqrt%7B%20%7B15%7D%5E%7B2%7D%20-%20%20%7B9%7D%5E%7B2%7D%20%20%7D%20)
![b = \sqrt{225 - 81}](https://tex.z-dn.net/?f=b%20%3D%20%20%5Csqrt%7B225%20-%2081%7D%20%20)
![b = \sqrt{144}](https://tex.z-dn.net/?f=b%20%3D%20%20%5Csqrt%7B144%7D%20)
![b = 12](https://tex.z-dn.net/?f=b%20%3D%2012)