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nydimaria [60]
2 years ago
6

Please help! Thanks alot

Mathematics
2 answers:
Rina8888 [55]2 years ago
6 0

kfkffjdjdkkekkekzkzkefnfnfnfnddn

wlad13 [49]2 years ago
3 0

Answer:

37.5 , 67.5 , 75

Step-by-step explanation:

x+x+30+2x=4x+30=180\\4x=150\\x=37.5\\

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Describe and correct the error the student made when writing the equation of the line that passes through (-8,5)
pshichka [43]

Option D (The student should have used  as the slope of the perpendicular line.) is correct.

Step-by-step explanation:

We need to identify the error that the student made in finding equation of the line that passes through (-8,5)  and is perpendicular to y = 4x + 2

The slope of the required line would me -1/m because both lines are perpendicular.

So, slope of new line will be: -1/4

because the equation of slope-intercept form is: y=mx+b where m is the slope

Now, for finding equation the student used point slope form i.e y-y_1=m(x-x_1)

where y_1 and x_1 are the points and m is the slope.

Putting values:

x_1=-8, y_1=5 and m=-1/4

y-5=-\frac{1}{4}(x-(-8))\\y-5=-\frac{1}{4}(x+8)\\y-5=-\frac{1x}{4}-2\\y=-\frac{1x}{4}-2+5\\y=-\frac{1x}{4}+3

This is the correct solution.

The student made error by using the wrong slope he used 2 instead of -1/4

in the step y-5 = 2(x-(-8))

So, Option D (The student should have used  as the slope of the perpendicular line.) is correct.

Keywords: Equation of line using Slope  

Learn more about Equation of line using Slope at:

  • brainly.com/question/4819659
  • brainly.com/question/4097107
  • brainly.com/question/1979240

#learnwithBrainly

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Daniel [21]

Hello!

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Therefore, our answer is B) 192.

I hope this helps!

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Answer:

C. (x + 2, Y - 3)

Step-by-step explanation:

C. (x + 2, Y - 3)

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