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balandron [24]
3 years ago
10

The circumference of a circle is 11r inches. What is the area, in square inches, of the circle? Express your answer in terms of

t.
Mathematics
1 answer:
ira [324]3 years ago
3 0

Answer:

69.12r square inches

Step-by-step explanation:

C = 2πr

   = 2 x π x 11r

   = 69.12r

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Help plz!!!
lara [203]

Answer with explanation:

→→→Function 1

f(x)= - x²+ 8 x -15

Differentiating once , to obtain Maximum or minimum of the function

f'(x)= - 2 x + 8

Put,f'(x)=0

-2 x+ 8=0

2 x=8

Dividing both sides by , 2, we get

x=4

Double differentiating the function

f"(x)= -2, which is negative.

Showing that function attains maximum at ,x=4.

Now,f(4)=-4²+ 8× 4-15

           = -16 +32 -15

          = -31 +32

          =1

→→→Function 2:

f(x) = −x² + 2 x − 3

Differentiating once , to obtain Maximum or minimum of the function

f'(x)= -2 x +2

Put,f'(x)=0

-2 x +2=0

2 x=2

Dividing both sides by , 2, we get

x=1

Double differentiating the function,gives

f"(x)= -2 ,which is negative.

Showing that function attains maximum at ,x=1.

f(1)= -1²+2 ×1 -3

   = -1 +2 -3

  = -4 +2

 = -2

⇒⇒⇒Function 1  has the larger maximum.

6 0
3 years ago
Please help. I don't understand this.​
klio [65]

Answer:

radius=6

Step-by-step explanation:

arc ACB=6xPi

Pi=3.14159

arc ACB=18.85 (rounded to 2 places)

ACB is a half circle so a full circle would be 18.85x2 or 37.7

circumference (whole circle)=2 x Pi x radius

37.7=2 x 3.14159 x radius

radius= 37.7/(2 x 3.14159)

radius=6

7 0
3 years ago
If 2^2x=2^3, what is the value of x?
sergiy2304 [10]

Answer:

B) 3/2

Step-by-step explanation:

8 0
3 years ago
A rectangular prism has a square base. The sides of the base are 3in, and it has a height of 6 in. How
Jet001 [13]

Answer:

90

Step-by-step explanation:

"how many one inch squares" is basically saying surface area. just find the area of each side and add them.

4 0
3 years ago
9 ⅚ + 1 ¼ + ___________ = 14
tresset_1 [31]

Answer:

14

reeaADADSDDSSA

Step-by-step explanation:

8 0
3 years ago
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