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Anika [276]
3 years ago
5

This is a polygon. I can’t find the missing angle ?

Mathematics
1 answer:
siniylev [52]3 years ago
3 0
This is a lot of calculation.

So we know that the sum of angles for any heptagon is 900, because heptagon can be divided into five non-overlapping triangles and sum of angles of each triangle is 180.

Now you just add up all angles and simplify the equation:

900 = (6x - 8) + 120 + (7x - 64) + (5x - 4) + 135 + (3x + 31) + (4x + 15)

900 = <span>25x + 225

Now it's just regular algebra equation. You can solve for x:

675 = 25x

x = </span>27

So the value of x is 27
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George has $15. He tries to buy a movie ticket ($9.00), a pretzel ($2.65), a drink ($1.35), and two veggie cups ($1.74 each) but
mezya [45]

Answer:

He doesn't have enough money because the total of things he wants to buy is more than the money he has.

Step-by-step explanation:

9 + 2.65 + 1.35 + 2(1.74) must be less than or equal to 15. However all of this added together equals $16.48. This means that he doesn't have enough money.

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What is the solution of the system? Use the elimination method. {4x+3y=62x+2y=5 The only solution is (−32,  4) .
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What is 4 1/4 - 2 1/3 in the most simplified form?
Korolek [52]

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Can u help me if u don't mind tbh tho
stealth61 [152]

Answer:

Step-by-step explanation:

1. 13x + 2 = 4x + 38

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    9x = 36

     x = 4

2. 6(2/3 + q/6 = 5/6q + 1/3)

      4 + q = 5q + 2

    4 - 4q = 2

     -4q = -2

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3. 6n + 24 = -18

    6n = -42

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4. -11 + 3b + 15 = 7

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  7 -3r = -3r - 8

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7. 14v + 6 = 10 + 14v - 4

  14v + 6 = 14v + 6

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   5h - 7 = 5h - 7

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9. a. 10x + 10 (triangle)

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      x = 4

answer is A

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