Question

2x+11
6x-9
Find the value of x.

Answer 1

x = 5

Explanation:

equilateral triangle definition:

a triangle whose all three sides are of equal length and 3 congruent angles of 60°

so

2x + 11 = 6x - 9

2x - 6x = - 9 - 11

- 4x = -20

x = - 20 : (-4)

x = 5

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check (remember pemdas)

2 * 5 + 11 = 6 * 5 - 9

10 + 11 = 30 - 9

21 = 21

the answer is good

Answer 2

x = 5

Explanation:

Hey, sure thing! (: All of the angles in this triangle are equal, which means that this is an equilateral triangle, and since this is an equilateral triangle, then that means all sides must be equal to each other.

Now, let's set up an equation to show that.

2x + 11 = 6x - 9
+ 9 + 9
2x + 20 = 6x
- 2x -2x
20 = 4x
4 4
x = 5

Tada! That's how we got the answer. Best of luck with the rest of your responsiblities! <3