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3 years ago

35 points! Will mark Brainliest! Real answers only!

Mathematics

1 answer:

Wittaler [7]3 years ago

3 0

Answer:

Yay ty for the free points!

Step-by-step explanation:

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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

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

5 0

3 years ago

Rearranging formulae:

bazaltina [42]

Answer:

1. d/a+c=d

2. (m+21)/5=n

3. (1/2+2q)*4=p or 2+8q=p

4. (p-2a)/2pi=r

5. {[(5c+1)/2]+c}/3=a

7 0

4 years ago

Read 2 more answers

Please help me thank you. 16 points and show all work.

Solnce55 [7]

magnitude = sqrt(6^2+4^2)

= sqrt ( 36+16)

=sqrt (52) = 7.2

angle = tan^-1(6/4) = 56 degrees

5 0

3 years ago

Factor. 2xy+5x−12y−30

worty [1.4K]

2xy + 5x -12y -30
x(2y + 5) - 6( 2y + 5)
(2y+5) (x-6)

5 0

4 years ago

Read 2 more answers

Will give Brainliest if you get it right

fenix001 [56]

Answer:

10.63

Step-by-step explanation:

The distance between two points is sqrt((difference between y-values)^2 + (difference between x-values)^2) -->

sqrt(8^2 + 7^2) =

sqrt(64 + 49) =

sqrt( 113) =

10.630145 -->

10.63

5 0

3 years ago