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Lapatulllka [165]
3 years ago
15

A quadrilateral has angles that measure 56°, 97°, and 136°. What is the measure of the fourth angle?

Mathematics
1 answer:
Aleksandr [31]3 years ago
4 0
The quadrilateral adds up to 360 degrees. 

the 3 angles given add up to 289 degrees.

subtract the 3 given from 360

360 - 289

71 degrees.

i hope this helped! 
If you dont mind, please give me the brainliest answer! i am three away from the next rank :D
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Answer:

Option D. y=\frac{1}{3}x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

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<u><em>Verify each case</em></u>

case A) we have

y=x+\frac{1}{3}

Remember that

the line must pass through the origin

so

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In this case

For x=0

y=0+\frac{1}{3}=\frac{1}{3}

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case B) we have

y=1-\frac{1}{3}x

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

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The line not passes through the origin

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The equation B not represent a proportional relationship

case C) we have

y=3x+\frac{1}{3}

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=3(0)+\frac{1}{3}=\frac{1}{3}

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The line not passes through the origin

therefore

The equation C not represent a proportional relationship

case D) we have

y=\frac{1}{3}x

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=\frac{1}{3}(0)=0

so

The line passes through the origin

therefore

The equation D represent a proportional relationship

3 0
3 years ago
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UkoKoshka [18]

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