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EastWind [94]
3 years ago
13

Help what is the value of x ?

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0

Answer:

141

Step-by-step explanation:

The interior angles of a polygon with <em>n</em> sides is 180(<em>n</em> - 2) and the polygon has 7 sides, so the sum of its interior angles is 180(7 - 2) = 180(5) = 900.

125 + (x + 7) + 107 + (x - 15) + x + 131 + 122 = 900

Combining like terms,

3x + 477 = 900

3x = 423

x = 141

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Harold has 4 classes each morning. Each class is 1 hour long, and there are 10 minutes between classes. The first class is at 8
Viktor [21]

The fourth class ends at 12:30 pm

<em><u>Solution:</u></em>

Given that Harold has 4 classes each morning

Each class is 1 hour long, and there are 10 minutes between classes

The first class is at 8 A.M

<em><u>To find: Time at which fourth class ends</u></em>

Since each is 1 hour long and 10 minutes gap between classes

First class = 8 A.M to 9 A.M

Second class = 9:10 A.M to 10 : 10 AM

Third class = 10 : 20 AM to 11 : 20 AM

Fourth class = 11 : 30 AM to 12 : 30 PM

Thus the fourth class ends at 12:30 pm

4 0
3 years ago
Keke has 12 cups and 17 plates for a party how many cups does keke have
vodka [1.7K]

Im pretty sure that she has 12 cups.

4 0
3 years ago
Read 2 more answers
I need help with both of these
jeka57 [31]

Answer:

  1. 13x² - 19x + 23
  2. -16x +17

Step-by-step explanation:

1 . (4x² - 9x + 16) + (7 + 9x² - 10x)

4x² - 9x + 16 + 7 + 9x² - 10x

13x² - 19x + 23

2 . (-2x + 6) - (14x - 11)

-2x + 6 - 14x + 11

-16x +17

8 0
3 years ago
What is the LCM of 28,40, and 144
Simora [160]

Answer:

2 x 2 x 7 = 28 2 x 2 x 2 x 5 = 40 2 x 2 x 2 x 2 x 3 x 3 = 144 2 x 2 x 2 x 2 x 3 x 3 x 5 x 7 = 504... ... The LCM of the given two numbers using prime factorization is 36 ...

Step-by-step explanation:

8 0
3 years ago
If the 0 in the numeral 60428 is changed to 6 , by how much is the new number greater?
aniked [119]

I think it should be 6000 more! If not im so sorry!! Have a nice day!!

3 0
2 years ago
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