Why 28, 60 and 120. tell me each step please?

Mathematics

2 answers:

Citrus2011 [14]3 years ago

7 0

Step-by-step explanation:

Alright, so over here, the triangle is called an exterior angle. When there is a line outside the triangle.

And the line outside the triangle means that the line outside is equal to the 2 other angles.

So in this case, it would be 100 = 72 + x.

Now let's do 100 - 72 to get the missing x.

100 - 72 is 28, right?

So our answer is 28.

Now the next one.

Regular hexagons interior angle sum using the formula (n-2) × 180 = (6-2)×180 = 4 × 180° = 720°

every interior angle then would be 720/6 = 120°

Now exterior angles are always 360°

so all angles = 360/6 = 60º.

DanielleElmas [232]3 years ago

5 0

Answer:

down here

Step-by-step explanation:

Exterior angles is the sum of the two opposite angles

so 100 - 72° = x

x = 28°

thats how you get 28°

720° is the sum of angles in a regular hexagon

720 / 6 = 120°

So the interior is 120°

To find the exterior angle, simply subtract the interior degree from 180.

external degree = 180 - 120 = 60

The exterior angle of a regular hexagon is 60 degrees.

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The bar chart shows the percent of times each color marble was drawn from a bag after 1000 draws with replacement after each dra

DiKsa [7]

Answer:

Following are the solution to this question:

Step-by-step explanation:

In this question, the graph file is missing so, its solution can be defined as follows:

When the bag includes 20 marbles, each will be drawn 5% of the time on average.

The bar chart shows that nearly 50% of the workforce red marbles are drawn, and about 25% of the time blue and white marbles are drawn. so, the equation is:

$\to \frac{50\%}{5\%}= \frac{50 \times 100}{5\times 100}=\frac{50}{5} = 10 \ red \ marbles\\\\\to \frac{25\%}{5\%}= \frac{25 \times 100}{5\times 100}=\frac{25}{5} = 5\ blue \ marbles$