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KengaRu [80]
3 years ago
5

Points A and B lie on a circle centered at point O. If what is the ratio of the area of sector AOB to the area of the circle?

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

Answer:

C. 1/20

Step-by-step explanation:

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Determine if line AB is tangent to the circle.
Charra [1.4K]

Answer:

7) No

8) Yes

Step-by-step explanation:

Tangent lines are perpendicular to the radius lines at the point of intersection.  So we just need to check if these are right triangles.

7) c² = a² + b²

20² = 12² + 14²

400 = 340

No

8) c² = a² + b²

13² = 7.8² + 10.4²

169 = 169

Yes

6 0
3 years ago
What is the surface area?<br> 1 mm<br> 7 mm<br> 3 mm<br> square millimeters
AveGali [126]

Answer:

0.62 cm

Step-by-step explanation:

8 0
3 years ago
1/4 (20x−28) &lt;2(x−3)+2
xeze [42]

Answer:

Step-by-step explanation:

1/4 x 20x - 1/4 x 28<2x - 6 + 2

5x - 28/4<2x - 4

5x - 2x<-4 + 28/4

3x<-4/1 + 28/4

3x<-16 + 28/4

3x<12/4

3x<3

3x/3<3/3

x<1

6 0
3 years ago
20 subtracted from 6 times a certain number, the result is 94. what is the number?
tino4ka555 [31]
Let the number be x.
6x-20=94
6x=114
x=19
3 0
3 years ago
Read 2 more answers
A rectangle has a perimeter 204 it’s length six feet longer than twice it’s width if L stands for the rectangle and W stands for
andriy [413]

Answer:

W=32

L=70

Step-by-step explanation:

L=2w+6

204=2L+2W

204=2w+2(2w+6)

204=2w+4w+12

192=6w

w=32

L=2(32)+6

L=70

6 0
3 years ago
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