Answer:
A (first picture)
Step-by-step explanation:
Based on the picture, the lines are both perpendicular and the red line splits AB into two equal parts (bisects it), so it must represent the perpendicular bisector of AB.
Answer:
![83 + n](https://tex.z-dn.net/?f=83%20%2B%20n)
Step-by-step explanation:
The sum of 83 and a number would be
as an expression, where
is "said number".
The answer would be 1/4 :)
Answer:
The length of fencing will be ![300\ ft](https://tex.z-dn.net/?f=300%5C%20ft)
Step-by-step explanation:
Step 1
Find the dimensions of the rectangle
we know that
The area of a rectangle is equal to
![A=bh](https://tex.z-dn.net/?f=A%3Dbh)
In this problem we have
![A=5,000\ ft^{2}](https://tex.z-dn.net/?f=A%3D5%2C000%5C%20ft%5E%7B2%7D)
so
-----> equation A
-----> equation B
Substitute equation B in equation A
![10,000=h^{2}](https://tex.z-dn.net/?f=10%2C000%3Dh%5E%7B2%7D)
square root both sides
![h=100\ ft](https://tex.z-dn.net/?f=h%3D100%5C%20ft)
Find the value of b
-----> ![b=\frac{100}{2}=50\ ft](https://tex.z-dn.net/?f=b%3D%5Cfrac%7B100%7D%7B2%7D%3D50%5C%20ft)
step 2
Find the length of fencing
The perimeter of a rectangle is equal to
![P=2(b+h)](https://tex.z-dn.net/?f=P%3D2%28b%2Bh%29)
we have
![h=100\ ft](https://tex.z-dn.net/?f=h%3D100%5C%20ft)
![b=50\ ft](https://tex.z-dn.net/?f=b%3D50%5C%20ft)
substitute
![P=2(50+100)=300\ ft](https://tex.z-dn.net/?f=P%3D2%2850%2B100%29%3D300%5C%20ft)