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Arte-miy333 [17]
3 years ago
14

If 1 is subtracted from the numerator and from

Mathematics
1 answer:
max2010maxim [7]3 years ago
5 0
1 - 2/3 = 1/3


1+ (-1/3) = 2/3

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Find the measure of Angle B<br><br> A. 50°<br> B. 55°<br> C. 60°<br> D. 65°
kondaur [170]

Option B. 55° is the correct answer

Step-by-step explanation:

"The sum of interior angles of a triangle is always 180°"

Given

m∠A=(3x+1)°

m∠B=(2x-1)°

m∠C = 40°

We know that

m∠A+m∠B+m∠C=180°

Putting the values of angles

(3x+1) +(2x-1) +40 = 180\\3x+1+2x-1+40 = 180\\5x+40=180\\

Subtracting 40 from both sides

5x+40-40=180-40\\5x=140

Dividing both sides by 5

\frac{5x}{5} = \frac{140}{5}\\x=28

We have to find Angle B,

So

m∠B = 2x-1 = 2(28)-1 = 56-1 = 55°

Hence,

m∠B=55°

Option B. 55° is the correct answer

Keywords: Triangle, Interior angles

Learn more about triangles at:

  • brainly.com/question/12896802
  • brainly.com/question/12973601

#learnwithBrainly

8 0
3 years ago
10. Write an equation to find the<br> value of x.
vitfil [10]

Answer:

x = (180 - 68) / 2

Step-by-step explanation:

x = 56°

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1.Simplify the following Expression<br> a. 3y2 + 8y - 12 + 6x – 4y + 2y2
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Answer:

5y2 + 4y - 12 + 6x

Step-by-step explanation:

3y2 + 2y2 + 8y - 12 + 6x

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3 years ago
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