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Studentka2010 [4]
2 years ago
9

Find the exact circumference of a circle with the given radius.

Mathematics
1 answer:
11Alexandr11 [23.1K]2 years ago
3 0

Answer:

6.5\pi\ in

Step-by-step explanation:

we know that

The circumference of a circle is equal to

C=2\pi r

we have

r=3\frac{1}{4}\ in

Convert to an improper fraction

r=3\frac{1}{4}=\frac{3*4+1}{4}=\frac{13}{4}\ in

substitute

C=2\pi(\frac{13}{4})

C=\frac{13}{2}\pi=6.5\pi\ in

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3<br><img src="https://tex.z-dn.net/?f=3%20%2B%204%20%3D%20x%20-%201%20" id="TexFormula1" title="3 + 4 = x - 1 " alt="3 + 4 = x
Nostrana [21]
8 is the answer I got when I did the equation
5 0
2 years ago
Read 2 more answers
Can someone please help me with this geometry please?
Crank

Answer:

<u>5x+13</u> ÷ 36 = 6x-2 ÷ 30

5x+13 ÷ 6 = 6x-2 ÷ 5

25x+65=36x-12

11x=77 → x=7

<u />

Step-by-step explanation:

5 0
2 years ago
HELP ME WITH MATHHHHH ILL GIVE YOU BRAINLIEST
Alla [95]

Answer:

  -3, 1, 4 are the x-intercepts

Step-by-step explanation:

The remainder theorem tells you that dividing a polynomial f(x) by (x-a) will result in a remainder that is the value of f(a). That remainder will be zero when (x-a) is a factor of f(x).

In terms of finding x-intercepts, this means we can reduce the degree of the polynomial by factoring out the factor (x-a) we found when we find a value of "a" that makes f(a) = 0.

__

For the given polynomial, we notice that the sum of the coefficients is zero:

  1 -2 -11 +12 = 0

This means that x=1 is a zero of the polynomial, and we have found the first x-intercept point we can plot on the given number line.

Using synthetic division to find the quotient (and remainder) from division by (x-1), we see that ...

  f(x) = (x -1)(x² -x -12)

We know a couple of factors of 12 that differ by 1 are 3 and 4, so we suspect the quadratic factor above can be factored to give ...

  f(x) = (x -1)(x -4)(x +3)

Synthetic division confirms that the remainder from division by (x -4) is zero, so x=4 is another x-intercept. The result of the synthetic division confirms that x=-3 is the remaining x-intercept.

The x-intercepts of f(x) are -3, 1, 4. These are the points you want to plot on your number line.

5 0
2 years ago
Find the slope of the line (brainlist whoever gets it right first and extra points on this question)
nekit [7.7K]

Answer:

y = -3x

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
-5(-x - 1) + 4x – 1= 49<br> solve for x
Anton [14]

Answer:

x=5

Step-by-step explanation:

-5(-x - 1) + 4x – 1= 49

Distribute

5x +5 +4x -1 = 49

Combine like terms

9x +4 = 49

Subtract 4 from each side

9x+4-4 = 49-4

9x = 45

Divide by 9

9x/9 =45/9

x = 5

4 0
3 years ago
Read 2 more answers
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