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Ymorist [56]
3 years ago
15

Can some one help me

Mathematics
2 answers:
Goryan [66]3 years ago
5 0

Answer:

31.4yard long wire is needed.

perimeter of circle=2πr=2×22/7×5=31.4yard

zavuch27 [327]3 years ago
4 0

Answer:

B

Step-by-step explanation:

If 5 is the radius, then we need to multiply by 2 to get the diameter.

10 is the diameter.

Multiply by pi to get your answer

10pi is 31.4.

B-31.4.

Hope this helped!

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The ruby throated hummingbird has a wingbeat of about 200 beats per second about how many wing Beats would a hummingbird have in
Nady [450]
36,000 wing beats

60 sec= 1 minute 60*3=180sec/3minutes

180*200=36,000

4 0
3 years ago
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
Which of the -values are solutions to the following inequality?
Triss [41]
The answer is 48 i think
7 0
3 years ago
A bag has 3 red marbles, 3 blue, 4 green and 2 yellow. What is the theoretical probability of pulling a red marble?
svetlana [45]

Answer:

Fraction: \frac{1}{4}

Decimal: 0.25

Percentage: 25%

Step-by-step explanation:

Have a good day :)

4 0
3 years ago
What is the product?<br> (x2+3y+7) [yy+1)
DIA [1.3K]
2 x y2 + 2 x 3 y3 + 3y + 7 y2 + 7
6 0
3 years ago
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