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anyanavicka [17]
3 years ago
10

A regular pentagon (5 sides) is rotated about its center. By which angle could the pentagon be rotated so that it is mapped onto

itself?
A
45 degrees

B
60 degrees

C
72 degrees

D
90 degrees
Mathematics
1 answer:
Marizza181 [45]3 years ago
7 0

Answer: Your answer is C, 72 degrees.

Step-by-step explanation:

A pentagon is a polygon with 5 vertices. A polygon can be rotated 360 degrees in total. Since this shape has 5 vertices, it can be rotated on every vertex to get the same figure, or in other words, it being mapped onto itself. Therefore, 360 degrees divided by 5 vertices is 72 degrees.

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The average value is given by

\displaystyle\frac1{10-4}\int_4^{10}\cos^{13}5t\sin5t\,\mathrm dt

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Find the equation of a line that contains the points (0,4) and (3,7). Write the equation in slope-intercept form.
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Read 2 more answers
ANSWER FAST ILL GIVE BRAINLIEST!!
Dominik [7]

Given:

A square base pyramid whose base length is 10 in. and height of triangular surface is 4 in.

To find:

The surface area of the pyramid to the nearest whole number.

Solution:

A square base pyramid contains square base with edge 10 in. and 4 congruent triangles with base 10 in. and height 4 in.

Area of a square is

A_1=(edge)^2

A_1=(10)^2

A_1=100

So, area of square base is 100 sq. in.

Area of a triangle is

A_2=\dfrac{1}{2}\times base\times height

A_2=\dfrac{1}{2}\times 10\times 4

A_2=20

So, area of each triangular surface is 20 sq. in.

Now, the total surface area of the pyramid is

Total area = Area of square base + Area of 4 congruent triangles.

A=A_1+4\times A_2

A=100+4\times 20

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5 0
3 years ago
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4 years ago
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Distribute and simplify.

y+2=1/6x+1

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