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3 years ago

For a circle of raduis 6feet, find the arc length of a central angle of 6

1 answer:

4 0

Length of a circumference=2πr
r=radius=6 feet.
lengt of this circumference=2π6 feet=12π feet.

1 circumference=360º; then:

360º-------------------12π feet
6º---------------------- x

360º * x=6º * 12π feet
x=(6º * 12π feet) / 360º=π/30 feet (≈0,105 feet).

Solution: π/30 feet

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Mumz [18]

We have

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so this is indeed a difference of squares. Factorizing would give

$81-49n^4=(9-7n^2)(9+7n^2)$

making the answer D.

We can further factor the first term here and write

$9-7n^2=3^2-(\sqrt 7\,n)^2=(3-\sqrt7\,n)(3+\sqrt7\,n)$

but that's clearly out of the scope of this question.

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3 years ago

In AWXY, mW<br> Find mZX<br> (2x – 12), m_X = (2x + 17), and m_Y = (9x-7)<br> Find m

sladkih [1.3K]

Answer:

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180

2x - 12 + 2x + 17 + 9x - 7 = 180 add like terms

13x - 2 = 180 add 2 to both sides

13x = 182 divide both side by 13

x = 14

m<X = 2x + 17 replace x with 14

2*14 + 17 = 45

5 0

2 years ago

Evaluate 2LW + 2HL + 2HW for L = 3,W = 2, and H = 4. 48 46

JulijaS [17]

2(3)(2) + 2(4)(3) + 2(4)(2)

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Hope this helps!

7 0

3 years ago

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Please help me I tried to do it

anyanavicka [17]

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3 years ago

Grace and her father spent 4 1/2 hours over the weekend restoring their fishing boat. This time makes up 6% of the

solong [7]

$\frac{9}{2}$ multiplied by $\frac{6}{100}$
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