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Salsk061 [2.6K]
2 years ago
7

−10 = −0.4k this is probably easy but can someone find k

Mathematics
1 answer:
azamat2 years ago
5 0

Answer: k = 25

hope this helped :)

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Chapter : Circles 1 question
erica [24]
We can solve this question in 2 ways: either using degrees or converting the degrees into radians.

Since, the question says degrees itself and there is no specification of using radians only, so I have solved it using degrees itself.

Part (a):

Perimeter of sector ORS = 2*Radius + Arc RS = 2*21 + 60*  \frac{ \pi }{180} *21 =  \frac{ \pi }{3} *21 = 7 \pi

Part (b):

Area of sector ORS = \frac{60}{360} * \pi * 21^{2} =  \frac{1}{6} * \pi *21*21=  \frac{147}{2} \pi

Area of sector POQ = \frac{36}{360} *  \pi * 14^{2} =  \frac{1}{10} *  \pi * 196 =  \frac{196}{10}  \pi

Thus, area of shaded region
= Area of sector ORS - Area of sector POQ

= \frac{147}{2} \pi - \frac{196}{10} \pi =  \frac{735 - 196}{10}  \pi =  \frac{539}{10}  \pi = 53.9 \pi

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2 years ago
Suppose that a box contains one fair coin and one coin with a head on each side. suppose that a coin is selected at random and t
lukranit [14]
There is a 50% chance it is the fair coin
4 0
3 years ago
Figure WXYZ is a parallelogram.
Viktor [21]
M<X=55° hope this helps
3 0
3 years ago
Read 2 more answers
R/16 + 6 = 7 pLEASE HELP WITHIN A HOUR OR TWO
cestrela7 [59]

Solution:

<u>Simplify the equation and solve for r.</u>

  • r/16 + 6 = 7
  • => r/16 = 7 - 6
  • => r/16 = 1
  • => r = 16

The value of r is 16.

<u>Check:</u>

  • r/16 + 6 = 7
  • => 16/16 + 6 = 7
  • => 1 + 6 = 7
  • => 7 = 7 (Proved correct)
7 0
2 years ago
Read 2 more answers
If M is the midpoint of SR, and SR=24, what is the length of SM?
Montano1993 [528]
Do you have a picture you can upload? It’s most likely 24/2 = 12
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3 years ago
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