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ELEN [110]
3 years ago
12

*WILL MARK BRAINLIEST*

Mathematics
1 answer:
coldgirl [10]3 years ago
7 0

Answer:

C

Step-by-step explanation:

circumfrence= 2πr

56.52=2πr

divide both sides by 2π to get your answer

r=9

C

You might be interested in
For which value of x must the expression radical 71x be further simplified?
Brilliant_brown [7]

Answer:

B  32

Step-by-step explanation:

sqrt(71*x)

71 is prime

sqrt(71) sqrt(x)

A. 19   prime

B. 32    = 16*2  16 is a perfect square

C. 34    = 2*17  both of which are prime

D. 41  prime


sqrt(71) sqrt(16 *2) = sqrt(71) * sqrt(16) * sqrt(2) = sqrt(71)*4*sqrt(2)

                                                                            =4sqrt(142)

8 0
4 years ago
A carousel horse travels on a circular path with a radius of 15 ft. How many feet does the horse travel over an angle of 2π3 rad
aleksandr82 [10.1K]

Answer:

The horse travels 31 feet over an angle of \frac{2\pi }{3} radians

Step-by-step explanation:

  • The formula of the length of an arc is L = \frac{x}{360} × 2πr, where x is the central angle subtended by this arc and r is the radius of the circle
  • To change the angle from radian measure to degree measure multiply it by \frac{180}{\pi }

∵ A carousel horse travels on a circular path

- That means the distance that the horse travels is the length

   of an arc of the circular path

∵ The radius of the circular path is 15 feet

∴ r = 15 ft

∵ The horse travel over an angle of \frac{2\pi }{3} radians

- Let us change it to degree by multiply it by \frac{180}{\pi }

∵  \frac{2\pi }{3} × \frac{180}{\pi } = \frac{360}{3} = 120°

- use the formula above to find the distance

∵ d = \frac{x}{360} × 2πr

∵ x = 120°

∴ d = \frac{120}{360} × 2π × 15

∴ d = 10π

∴ d = 31.41592654 feet

- Round it to the nearest foot

∴ d = 31 feet

The horse travels 31 feet over an angle of \frac{2\pi }{3} radians

4 0
4 years ago
Can someone please help me I will be giving 100 points and 5 starts if you can help me
svlad2 [7]

Answer:

number 5 is 15x

Step-by-step explanation:

what you have to do is just add basically. The ones with exponents you do the usual with those as well. Ignore the X's and when you solve the problem add the x beside the number.

4 0
3 years ago
Please answer sorry if it's not clear
Nitella [24]
Move the figure 10 units to the right and then rotate it 90º
4 0
3 years ago
Help plz and show work plz
Scorpion4ik [409]

Answer:

8

Step-by-step explanation:

Since this isosceles triangle has been broken down into two right triangles, and we already know that two sides are the exact same (note that there are 2 x's) that means BD and BC are going to be the exact same length. Since BD is 4, that means BC will be 4, and that means

4+4=8

Hope this helped!

4 0
4 years ago
Read 2 more answers
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