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fiasKO [112]
3 years ago
8

Can someone please help me with this ?? im really confused but i need to pass this test!

Mathematics
2 answers:
Keith_Richards [23]3 years ago
8 0

Answer:

84^{\circ}

Step-by-step explanation:

The measure of an inscribed angle is exactly half the measure of the arc it forms. Thus, we have the following equation:

2(7x-7)=9x+21

Solving, we get:

2(7x-7)=9x+21,\\14x-14=9x+21,\\5x=35,\\x=7

Plugging in x=7 into 9x+21:

\widehat{DG}=9(7)+21,\\\widehat{DG}=63+21,\\\widehat{DG}=\boxed{84^{\circ}}

Viktor [21]3 years ago
5 0

Answer:

-31

Step-by-step explanation:

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