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3 years ago

Find the measure of DB (a curvy line is on top of DB btw)

Mathematics

1 answer:

klasskru [66]3 years ago

5 0

Answer:

Arc DB = 146

x = 5

Step-by-step explanation:

Remark

The relationship between the large arc, the small arc and the intersecting angle is

1/2 (large arc - small arc) = intersecting angle.

Givens

Large arc = 25x + 21

Small arc = 96

Solution

1/2*(25x + 21 - 96) = 5x*2 Multiply both sides by 2

25x + 21 - 96 = 10 x Combine

25x - 75 = 10x Subtract 25x from both sides

-75 = 10x - 25x

-15x = -75

x = 5

DB = 25x + 21

DB = 25*5 + 21

DB = 125 + 21

DB = 146

Tell me if this is not in the choices.

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Vlada [557]

Let's see what to do...

_________________________________

Step (1)

Look : 16 , 10 , 4 , ...

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To do this, we need to subtract each sentence minus the previous sentence.

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Step (2)

To find the nth sentence in an arithmetic sequence, we must use the following equation :

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To find the 6th term just need to put the following parameters in the above sequence.

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And we're done.

Thanks for watching buddy good luck.

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