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3 years ago

Please help! 80 points! (picture included)

Mathematics

2 answers:

Scilla [17]3 years ago

6 0

Answer:

D. 15

Step-by-step explanation:

First find the value of x:

3x - 16 + 6x + 7 = 180 (supplementary angles)
9x = 189
x = 21

Find the value of y:

11y - 32 = 6x + 7 (vertical angles)
11y - 32 = 6*21 + 7
11y = 32 + 133
11y = 165
y = 165/11
y = 15

Correct choice is D

bekas [8.4K]3 years ago

3 0

Answer:

The answer is (D)

Step-by-step explanation:

If you need to explain I got you but Ill just give the answer for now!

Mark as Brainllest...

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DaniilM [7]

Answer:

$x=1$

Step-by-step explanation:

Expand the brackets by multiplying each term in the bracket by the expression outside the bracket:

$3(4x-5)-4x+1=-6$

⇒ $12x-15-4x+1=-6$

Gather like terms and combine:

⇒ $12x-4x+1-15=-6$

⇒ $8x-14=-6$

Add 14 to each side of the equation:

⇒ $8x-14+14=-6+14$

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Divide both sides by 8:

⇒ $8x \div8=8\div8$

⇒ $x=1$

8 0

2 years ago

Read 2 more answers

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Monica [59]

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poizon [28]

-9! person above was right

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