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3 years ago

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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Talia is buying beads to make bracelets. She makes a bracelet with 7 plastic beads and 5 metal beads for $7.25. She makes anothe

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<h2>Plastic Beads = $0.50</h2><h2>Metal Beads = $0.75</h2><h2 />

p = Plastic Beads

m = Metal Beads

Equations:

7p + 5m = 7.25

9p + 3m = 6.75

Make one pair of coefficients the same:

3 * (7p + 5m = 7.25) = 21p + 15m = 21.75

5 * (9p + 3m = 6.75) = 45p + 15m = 33.75

Remove that coefficient;

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