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tatyana61 [14]
3 years ago
13

Find the sum of all interior angles of the following regular 20 sided polygon

Mathematics
1 answer:
MaRussiya [10]3 years ago
7 0

Answer:

3240°

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 20, hence

sum = 180° × 18 = 3240°

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Answer:

14°

Step-by-step explanation:

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or,7x-1°+6x-1°=180°

or,13x-2°=180°

or,13x=182°

or,x=182°/13

or,x=14°

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4 years ago
Can someone help me please
Eduardwww [97]

Answer:

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(Use Solving Systems by Graphing to find a solution for this question)
Ray Of Light [21]

Answer:

5 months

Step-by-step explanation:

One cellphone provider charges AED10 per month plus an activation fee of AED20.

If I used the services of this cellphone provider for x months, total charges for the services,

y = 10x + 20 --------(1)

Similarly, charges for the second cellphone provider for x months of uses will be,

y = 11x + 15 -------(2)

Input-output table for equation (1)

x      1           2            3            4            5

y     30        40         50          60          70

Input output table for equation (2)

x      1           2            3            4            5

y     26        37          48          59         70

From these tables, we find (5, 70) is a common point for both.

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3 years ago
Which system of inequalities is represented by the graph?
Sliva [168]

Answer:

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Step-by-step explanation:

1. The shaded area is below the solid line at y=1, so the solution set is partially determined by the inequality ...

  y ≤ 1 . . . . . . values of y in the solution set are less than or equal to 1

The shaded area is below the line y=x, so is partially determined by ...

  y -x < 0

These inequalities match the second choice.

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2. The solid boundary line has a slope, rise/run, of 1/3. The shaded area is below it. So the applicable inequality is ...

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