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stealth61 [152]
3 years ago
13

How do I solve this question? ​

Mathematics
1 answer:
denpristay [2]3 years ago
8 0

Answer:

Angle O is 72 degrees. Angle C is 18 degrees.

Step-by-step explanation:

You know that angle B is 90 degrees because Lines AC and OB are perperdicular at point B.

Add together all of the angles in the triangle

a + 4a + 90 = 180      Combine like terms

5a + 90 = 180

     - 90   - 90           Subtract 90 from both sides

5a = 90                     Divide both sides by 5

a = 18

Plug this answer into the angles to find their measures

Angle C = 18 degrees

Angle O = 4(18) = 72 degrees

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svetoff [14.1K]
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1
5
17
53
161

Ian’s pattern:

0
1
3
7
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Ordered pair:

(1, 0)
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(17, 3)
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Table 1 -

Sequence 1:

9
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13
15
17

Sequence 2:

5
8
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Ordered pair:

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Table 2 -

Sequence 1:

20
16
12
8
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Sequence 2:

20
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14
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Ordered pair:

(20, 20)
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Table 3 -

Sequence 1:

1
3
7
15
31

Sequence 2:

40
24
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12
10

Ordered pair:

(1, 40)
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2 years ago
Answer and explanation please
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For the triangle, the shaded part, both the height and base are 12, so the area of it is:

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