Answer:
option (A) 900 ft²
Step-by-step explanation:
Let the length be L and width of the area be 'B'
now,
Perimeter of the fence = 2 (L + B)
also,
2 (L + B) = 120 feet
or
L + B = 60 ft
or
L = 60 - B ft
Now,
The area of the fencing ground, A = LB
or
A = (60 - B)B
A = 60B - B²
now,
differentiating the area with respect to width B, we get
or
= 60 - 2B
for point of maxima or minima, put = 0
thus,
60 - 2B = 0
or
2B = 60
or
B = 30 ft
to check for maxima or minima
= - 2
since,
is negative, B = 30 ft is point of maxima
therefore,
L = 60 - B = 60 - 30 = 30 ft
Thus,
Maximum area of the fencing ground = 30 × 30 = 900 ft²
Hence,
The correct answer is option (A) 900 ft²
Is the 8 repeating or 78
If just 8: 71/90
If 78: 78/99
Answer:
2: Obtuse
6: straight
7: acute
Step-by-step explanation:
acute angle-an angle between 0 and 90 degrees.
right angle-an 90 degree angle.
obtuse angle-an angle between 90 and 180 degrees.
straight angle-a 180 degree angle.
Or,at least i think
Answer:
(x-9)²+(y-1)²=1
Step-by-step explanation:
Standard equation of a circle with center at (h, k) and radius r
(x-h)²+(y-k)²=r²
(x-9)²+(y-1)²=r², for the center of the circle at (9,1)
(x-9)²+(y-1)²=1², because the radius must be 1 since the circle needs to tangent to the x-axis
(x-9)²+(y-1)²=1
Dudeeee this is hard. Pick C no balls
