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3 years ago

How many sides does an octagon have? sides

Mathematics

2 answers:

aleksklad [387]3 years ago

6 0

Answer:

8 do u have a pic of it but I think it’s 8

Step-by-step explanation:

zheka24 [161]3 years ago

3 0

Answer:

eight

Step-by-step explanation:

3 - Triangle

4 - Quadrilateral

5 - Pentagon

6 - Hexagon

7 - Heptagon or Septagon

8 - Octagon

9 - Nonagon

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Find the time it takes for a rocket following the path, h(x) = - 3x2 + 18x, to reach a maximum. In your final answer, include al

Georgia [21]

Answer:

it is 108

Step-by-step explanation:

8 0

3 years ago

Pls help me on this it’s rlly hard I’m not sure if the faces is correct and pls tell me the vertices to

Nady [450]

Answer:

6 vertices and 5 faces

Step-by-step explanation:

The faces are correct as there are 3 rectangles and 2 triangles.
So a total of 5 faces

There are 6 corners/vertices so the answer is 6 vertices

6 0

3 years ago

Find the values of x and y.

AlekseyPX

Its A
7x+7= 112
7x= 112-7
7x=105
x=105/7
x=15
To find y
180-112=68
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5 0

3 years ago

Factor.<br><br> 100x^2 − 20xy + y^2

castortr0y [4]

The answer is (10x - y)2

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6 0

3 years ago

(This is a "show your work" type of assignment)

joja [24]

Answer:

Part 1) It is not possible to apply the Pythagorean Theorem to find the missing side, because is not a right triangle

Part 2) I would use the law of the cosine, because to apply the law of sine I would need to know the value of angle C or angle B

Part 3) The length of side CB is $369\ units$

Part 4) The measure of angle C is $35\°$

Part 5) The measure of angle B is $88\°$

Step-by-step explanation:

Part 1) Can you use Pythagorean Theorem to find the missing side?

we know that

The Pythagorean Theorem is used in a right triangle

The triangle ABC of the figure is not a right triangle

therefore

It is not possible to apply the Pythagorean Theorem to find the missing side

Part 2) Would you use Law of Sine or Law of Cosine to find the length of side CB?

I would use the law of the cosine, because to apply the law of sine I would need to know the value of angle C or angle B

Part 3) Find the length of side CB. Show your work and round your answer to the nearest whole number

Applying the law of cosine

$BC^{2}=AB^{2}+AC^{2}-2(AB)(AC)cos(A)$

substitute the values

$BC^{2}=255^{2}+440^{2}-2(255)(440)cos(57\°)$

$BC^{2}=136,408$

$BC=369\ units$

Part 4) Find the measure of angle C. (Hint: use the other “Law”). Round your answer to the nearest whole degree

Applying the law of sines

$\frac{AB}{sin(C)}=\frac{CB}{sin(A)}$

substitute the values

$\frac{255}{sin(C)}=\frac{369}{sin(57\°)}$

$sin(C)=255*sin(57\°)/369=0.5796$

$C=arcsin(0.5796)=35\°$

Part 5) What is the measure of angle B? Show your work and round your answer to the nearest whole degree.

Remember that

the sum of the interior angles of a triangle must be equal to 180 degrees

substitute the values and solve for <B

$57\°+$

4 0

3 years ago