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lora16 [44]
3 years ago
9

I need help with this problemmm, someone help mee!!.

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

∠A=30°

Step-by-step explanation:

let's call the angle at the bottom B and the one next to the 130 C

∠A=3x-6

∠C=180-130= 50°

vertical angles are equal∠B =8x+4

∠A+∠C+∠B=180°

find x:

3x-6+50+8x+4= 180°

11x+48=180°

11x= 132

x=12

find ∠A

∠A=3x-6= 3(12)-6 =30°

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If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
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Answer: The value of y is 39.6 when x = 11 and the required expression is y(11) = 39.6

Step-by-step explanation:

Since we have given that

y varies directly as x.

If y = 18, when x = 5.

So, we need to find the value of y when x is 11.

According to question, we get that

\dfrac{y}{x}=\dfrac{18}{5}=\dfrac{y}{11}\\\\18\times 11=5y\\\\198=5y\\\\\dfrac{198}{5}=y\\\\y=39.6

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3 years ago
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mel-nik [20]
Thank you for posting your question here at brainly. Feel free to ask more questions.  

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3 0
3 years ago
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geniusboy [140]

Answer:

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Step-by-step explanation:

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