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weeeeeb [17]
3 years ago
13

Can someone please tell me the answers but also explain how to do it? Thank you

Mathematics
1 answer:
11111nata11111 [884]3 years ago
5 0

Answer:

8: 90 degrees, 9: 165 degrees, 6: 81 degrees, 7: angles in the same segment are equal

Step-by-step explanation:

For question 8:

Notice how the line AB just barely touches the edge of the circle. We call this kind of line a tangent. The point O is at the center of the circle so the line OB is a radius. The angle between a tangent and a radius is always 90 degrees, so ABO is 90 degrees.

For question 9:

By the exact same logic as 8, ACO is also 90 degrees. The sum of interior angles in a 4 sided shape (a quadrilateral) is always 360 degrees. This means that 15 + 90 + 90 + x = 360 = 195 + x so x = 360 - 195 = 165

For question 6/7:

We use the theorem that the angles in the same segment are equal. This means that a is 81 degrees.

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ollegr [7]

Hi there!

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Length: 1/2 × 5 = 2.5 cm

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7 0
3 years ago
find 2 consecutive integers such that three times the square of the first is equal to seven more than five times the second
melamori03 [73]

Answer:

Step-by-step explanation:

We are looking for two numbers, N and N + 1. From the problem statement, we can setup the following equation:

3N^{2} = 5(N + 1) + 7

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Because 3 is the only integer solution, the answer is 3 and 4.

5 0
3 years ago
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Answer

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3 years ago
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malfutka [58]
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2 is the answer.........

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2 years ago
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