If is -(-13/12) then A. -13/-12
If is -13/12 then B. 13/-12
Molly would need 43 feet of fencing to fence the area.
Step-by-step explanation:
We can see that the area is in the form of a right-angled triangle. Since only two sides of the triangle is given, we could utilise Pythagoras theorem to our advantage to find out the third side.
In Δ ABC
AB² (base) + AC² (perpendicular) = BC² (hypotenuse)
Substituting the values of AB as 10 feet and BC as 18 feet
AC²= BC²- AB
²
∴AC²= 224
∴AC= 14.96 cm
Amount of fence required by molly would equal perimter of the area.
⇒The perimeter of the area would equal AB+BC+AC
⇒Summing up the values of AB, AC and BC
Perimeter= 10+14.96+18= 42.96 feet which is about 43 feet
Hence, Molly would require 43 feet of fencing.
Note: Consider the below figure attached with this question.
Given:
The ordered pair(6,y) is on line AC.
To find:
The y of this ordered pair.
Solution:
From the below figure it is clear that endpoints of AC are A(-7,-4) and C(1,4). So, equation of AC is
Subtracting 4 from both sides, we get
Thus, the equation of line AC is .
Put x=6 to find the y for the ordered pair (6,y).
Therefore, the value of y is 9.