Question

the sum of three angles (5x+4)(x-2)and (3x+7)form a straight angle . find the types of these angles​

Answer 1

Step-by-step explanation:

straight angle= 180

5x+4+x-2+3x+7=180

9x+9=180

x+1=20

x=19

5x+4=95+4=99 degree means obtuse angle

x-2=19-2=17 degree means acute angle

3x+7= 57+7=64 degree means acute angle

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Answer 2

Answer:

The sum of three angles (5x + 4), (x – 2) and (3x + 7) forms a straight angle. Find the type of these angles.

Solution:

⇒ (5x + 4) + (x – 2) + (3x + 7) = 180°

⇒ 5x + 4 + x -2 + 3x + 7 = 180°

⇒ 9x + 9 = 180

⇒ 9x = 171

x = 19

So, angle (5x + 4) = 99° ⇒ obtuse angle

(x – 2) = 17° ⇒ acute angle

(3x + 7) = 64° ⇒ acute angle

Step-by-step explanation:

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