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4 years ago

How many edges, vertices, and faces does the figure shown have?

Mathematics

2 answers:

valentinak56 [21]4 years ago

7 0

Answer:

A. 12 edges. 6 vertices, and 8 faces.

Step-by-step explanation:

The edges are the places where the faces meet. They can be easily identified as the lines that form the shape. There are 12 edges.

The vertices are the places where the edges meet. They are more commonly known as the corners of the figure. There are 6 vertices.

The faces are the flat sides/surfaces of the figure. In this case, the faces are the triangles. There are 8 faces.

Hope this helps!

Lemur [1.5K]4 years ago

5 0

Answer:

A. 12 edges , 6 vertices, and 8 faces

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maksim [4K]

We first solve the angle from the given sinθ=3/5. Using a calculator in degrees mode, theta is equal to 36.87 degrees. Hence 2 theta is equal to 73.74 degrees. The value of cosine 73.74 degrees is equal to 7/25. This is the final answer.

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3 years ago

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My name is Ann [436]

Answer:

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Step-by-step explanation:

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3 years ago

Please help me answer this question!!!!

kotykmax [81]

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Answer:

y = 4x +3

Step-by-step explanation:

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b = y -mx

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3 0

3 years ago

Select the pair of equations whose graphs are perpendicular.

viktelen [127]

$k:\ y=m_1x+b_1\ \ \ \ and\ \ \ \ l:\ y=m_2x+b_2\\ \\the\ line\k\ is\ perpendicular\ to\ the\ line\ l\ \ \ \Leftrightarrow\ \ \ m_1\cdot m_2=-1\\----------------------------\\\\A.\\2y=-3x+5\ \ \Rightarrow\ \ \ y=- \frac{3}{2} x+2.5\ \ \Rightarrow\ \ m_1=- \frac{3}{2} \\\\2x+3y=4\ \ \Rightarrow\ \ 3y=-2x+4\ \ \Rightarrow\ \ y=- \frac{2}{3}x+1 \frac{1}{3} \ \ \Rightarrow\ \ m_2=- \frac{2}{3} \\\\m_1\cdot m_2=- \frac{3}{2} \cdot (- \frac{2}{3})=1 \neq -1$

$B.\\5x-8y=9\ \ \Rightarrow\ \ -8y=-5x+9\ \ \Rightarrow\ \ \ y= \frac{5}{8} x-1 \frac{1}{8} \ \Rightarrow\ \ m_1= \frac{5}{8} \\\\12x-5y=7\ \Rightarrow\ \ -5y=-12x+7\ \ \Rightarrow\ \ y= \frac{12}{5}x-1 \frac{2}{5} \ \ \Rightarrow\ \ m_2= \frac{12}{5} \\\\m_1\cdot m_2= \frac{5}{8} \cdot \frac{12}{5}= \frac{3}{2} \neq -1$

$C.\\y=2x-7\ \ \Rightarrow\ \ m_1=2 \\\\x+2y=3\ \Rightarrow\ \ 2y=-x+3\ \ \Rightarrow\ \ y= -\frac{1}{2}x+1 \frac{1}{2}\ \ \Rightarrow\ \ m_2=- \frac{1}{2} \\\\m_1\cdot m_2= 2 \cdot (- \frac{1}{2})= -1\ \ \Rightarrow\ \ y=2x-7\ \ \ \ \perp\ \ \ \ x+2y=3$

$
D.\\x+6y=8\ \ \Rightarrow\ \ 6y=-x+8\ \ \Rightarrow\ \ \ y=- \frac{1}{6} x+1 \frac{1}{3}\ \ \Rightarrow\ \ m_1= -\frac{1}{6} \\\\y=2x-8\ \Rightarrow\ \ m_2= 2 \\\\m_1\cdot m_2= -\frac{1}{6} \cdot2=- \frac{1}{3} \neq -1$

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3 years ago

How do you get the measurements of an angle

Rasek [7]

Answer:

Use a ruler or protractor

Step-by-step explanation:

All you have to do it’s

1) Get your ruler/protractor out (And if you don’t have a ruler use a edge/slide of a object for example it would be a side of a book and than measure it, but if you don’t have a protractor, you have to buy one)

2) measure the angle

3) boom!

5 0

3 years ago