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Lera25 [3.4K]
2 years ago
15

Find the circumference

Mathematics
2 answers:
tia_tia [17]2 years ago
7 0

Answer:

6.25\pi

Step-by-step explanation:

A circumference of a circle can be determined by this: 2*pi*r

We're given the diameter. Divide that by 2 to get the radius.

6.45/2 = 3.225

Now multiply that by 2*pi. That gives us 2 * 3.14 * 3.225 = 20.253.

This could've also been done easier by doing pi*d where d is the diameter and you give the answer by multiplying them both. Also works, but the above formula is just key to many things and can also be used to derive the simpler one. Hope it helps! :)

ch4aika [34]2 years ago
7 0

Answer:

6.45π OR 20.253 units.

Step-by-step explanation:

Given, Diameter (d) = 6.45 units

Circumference = πd = 6.45π

If, π = 3.14, then,

6.45π

= 6.45 * 3.14

= 20.253 units

Hope it helps ⚜

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Which equation represents this sentence? 1/3 times the difference of a number and 4 is 1/6. 1/3x−4=16 1/3(x−4)=1/6 4−1/3x=1/6 1/
pychu [463]

Answer:

(1/3)(n - 4) = 1/6

Step-by-step explanation:

Let the number be n.  Then the given phrase can be written symbolically as (1/3)(n - 4) = 1/6. This is the second answer choice.

8 0
2 years ago
Find the HCF of 64 and 80.
Varvara68 [4.7K]

Answer:

64=2✖️2✖️2✖️2✖️2✖️2

80=2✖️2✖️2✖️2✖️2✖️5

Common factors=2✖️2✖️2✖️2

As HCF= Product of common factors

HCF =2✖️2✖️2✖️2

HCF=16

Step-by-step explanation:

I hope this will help you:)

7 0
3 years ago
Read 2 more answers
Suppose . has 4 critical points. List them in increasing lexographic order. By that we mean that (x, y) comes before (z, w) if o
V125BC [204]

The points are (0,0) Minimum and (1/6, 1/18) is the saddle point.

What is the saddle point?

  • A saddle point, also known as a minimax point, is a place on the surface of a function's graph where the slopes in orthogonal directions are all zero but the function does not have a local extremum.

To solve the question we have:

f(x,y) = xy(1-2x-6y)

Therefore, f(x,y) = xy-2x²y-6xy²

Finding the partial derivative of the above gives:

fₓ = y - 4xy-6y²

= x - 2x²-12xy

Therefore, when the above equations are set to 0 we get:

y - 4xy-6y² = 0.......(1)

x - 2x²-12xy  = 0......(2)

Dividing equations (1) and (2) by y and x respectively give:

1 - 4x - 6y = 0

1 - 2x - 12y = 0  

Solving gives:

x = 0.167 = 1/6

y = 0.056 = 1/18

When we place x in equation (1) we have:

y - 4(1/6)y-6y² = 0

y = 0 or y = 1/18

Similarly, x = 0 or 1/6

Therefore, the four critical points are:

(0,0) (1/6,1/18)

When x = 0 and y = 0

f(x,y) = 0 Hence this is a minimum

When x = 1/6 and y = 1/18

f (x,y) = 1/324 Which is a saddle point.

Therefore, the points are (0,0) Minimum, and (1/6, 1/18) is the saddle point.

Know more about saddle point here:

brainly.com/question/17465347

#SPJ4

The question you are looking for is here:

(1 point) The function f(x,y)=xy(1−2x−6y) has 4 critical points. List them and select the type of critical point. Points should be entered as ordered pairs and listed in increasing lexicographic order. By that, we mean that (x,y) comes before (z,w) if x

4 0
1 year ago
Klara has decided to file her tax return electronically. How will she benefit from e-filing?
damaskus [11]

Answer:

C.  If she's expecting a tax refund, e-filing can expedite the refund from the IRS.

Step-by-step explanation:

Filing the tax return electronically provides some benefits like doing it in an easy way as the website has a step by step process that guides people through it and it allows to be more accurate as the program checks what you do. Also, it helps to save time and it allows to receive the tax refund faster because e-filing give you the possibility to ask for a deposit on your account instead of waiting for a check to arrive. According to this, the answer is that Kiara will benefit from e-filing because if she's expecting a tax refund, e-filing can expedite the refund from the IRS.

7 0
3 years ago
Kaitlin, Joe, and Miguel have a total 96 of in their wallets. Kaitlin has 6 less than Joe. Miguel has 4 times what Joe has. How
schepotkina [342]

Answer:

15, 11, 60

Step-by-step explanation:

Let Joe's amount be x

x + x - 6 + 4x = 96

6x - 6 = 96

6x = 90

x = 15

Joe has 15

Kaitlin has 11

Miguel has 60

4 0
1 year ago
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