Answer:
I would say 720
Step-by-step explanation:
one possibility that comes to my head is stack them on top of each other in many ways
Answer:
you draw a T. form and then you can start to in debit and credit
About 25 animals were going towards the river
No, she cannot give each person 3/4 because when you divide 5 1/2 by 3/4, you will result in the number 7 1/3. This will not be enough for the 10 people.
As given by the question
There are given that the point of two-line
![\begin{gathered} (1,\text{ 7) and (5, 5)} \\ (-1,\text{ -3) and (1, 1)} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%281%2C%5Ctext%7B%207%29%20and%20%285%2C%205%29%7D%20%5C%5C%20%28-1%2C%5Ctext%7B%20-3%29%20and%20%281%2C%201%29%7D%20%5Cend%7Bgathered%7D)
Now,
From the condition of a parallel and perpendicular line
If the slopes are equal then the lines are parallel
If the slopes are negative reciprocal then the lines are perpendicular
If the slopes are neither of the above are true then lines are neither
Then,
First, find the slope of both of line
So,
For first-line, from the formula of slope
![\begin{gathered} m_1=\frac{y_2-y_1}{x_2-x_1} \\ m_1=\frac{5_{}-7_{}}{5_{}-1_{}} \\ m_1=-\frac{2}{4} \\ m_1=-\frac{1}{2} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20m_1%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%5C%5C%20m_1%3D%5Cfrac%7B5_%7B%7D-7_%7B%7D%7D%7B5_%7B%7D-1_%7B%7D%7D%20%5C%5C%20m_1%3D-%5Cfrac%7B2%7D%7B4%7D%20%5C%5C%20m_1%3D-%5Cfrac%7B1%7D%7B2%7D%20%5Cend%7Bgathered%7D)
Now,
For second-line,
![\begin{gathered} m_1=\frac{y_2-y_1}{x_2-x_1} \\ m_1=\frac{1_{}-(-3)_{}}{1-(-1)_{}} \\ m_1=\frac{4}{2} \\ m_1=2 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20m_1%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%5C%5C%20m_1%3D%5Cfrac%7B1_%7B%7D-%28-3%29_%7B%7D%7D%7B1-%28-1%29_%7B%7D%7D%20%5C%5C%20m_1%3D%5Cfrac%7B4%7D%7B2%7D%20%5C%5C%20m_1%3D2%20%5Cend%7Bgathered%7D)
The given result of the slope is negative reciprocal because
![\begin{gathered} -\frac{1}{2}=-(-\frac{2}{1}) \\ -\frac{1}{2}=2 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20-%5Cfrac%7B1%7D%7B2%7D%3D-%28-%5Cfrac%7B2%7D%7B1%7D%29%20%5C%5C%20-%5Cfrac%7B1%7D%7B2%7D%3D2%20%5Cend%7Bgathered%7D)
Hence, the slope of line1 is -1/2, and slope of line2 is 2 and the lines are perpendicular.