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CaHeK987 [17]
3 years ago
12

Need math genius.Forgot to post question Lol.But help plz​

Mathematics
2 answers:
marin [14]3 years ago
8 0

Answer:

150

Step-by-step explanation:

To find the measure of an interior angle of a regular dodecagon we use the formula : Sum = (n-2)180

There are 12 sides in this polygon. The "n" represents the number of sides in the polygon.

Sum = (n-2)180

= (12-2)180 = 10(180) = 1800.

But this the TOTAL amount of interior angles in this polygon. We only have to find 1. Like I said, there are 12 sides in this polygon and tofimdkne side we divide by 12.

1800 ÷ 12 = 150

zlopas [31]3 years ago
7 0

Answer:

150°

Step-by-step explanation:

You are given the formula for the sum of the interior angles where n is the number of sides.

Substitute 12 in:

(12-2)×180

=10×180

=1800

To find an individual angle, divide the sum by n.

1800÷12=150

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Read 2 more answers
For g(x)=1/2x-11, find x when g(x)=-5
Vesna [10]

Answer:

x = 12

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

g(x) = 1/2x - 11

g(x) = -5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute:                    -5 = 1/2x - 11
  2. Isolate <em>x</em> term:              6 = 1/2x
  3. Isolate <em>x</em>:                       12 = x
  4. Rewrite:                        x = 12
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