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2 years ago

Use Euler’s Formula to find the missing number. Edges: 37 Faces: 25 Vertices: ?

Mathematics

1 answer:

matrenka [14]2 years ago

7 0

Answer:

Step-by-step explanation:

Comment

The formula that relates edges faces and vertices is F + V = E + 2

Givens

Edges (E): 37

Faces (F) = 25

Vertices: x

Solution

25 + x = 37 + 2 Subtract 25 from both sides.

25-25 +x= 37 - 25 + 2 Combine

x = 12 + 2

x = 14

Answer: The vertices =<u> 14</u>

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The choir at wise middle school was preparing for their Hispanic concert. While rehearsing their opening song they noticed it to

Dominik [7]

Answer:

45.88 seconds

Step-by-step explanation:

$t_1$ = Time taken to sing the fist time = $48.7\ \text{s}$

Time taken to sing the second time was $2.9\ \text{s}$ less than the first time so

$t_2=t_1-2.9\\\Rightarrow t_2=48.7-2.9\\\Rightarrow t_2=45.8\ \text{s}$

Time taken to sing the third time was $0.47\ \text{s}$ less than the the second time

$t_3=t_2-0.47\\\Rightarrow t_3=45.8-0.47\\\Rightarrow t_3=45.88\ \text{s}$

So the time it took the choir to sing the third time was 45.88 seconds.

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3 years ago

How many triangles exist with the given side lengths of 3cm, 5cm, and 9cm?

Irina-Kira [14]

Only one triangle exist

3 0

4 years ago

Read 2 more answers

According to the tree diagram below, what is the probability that someone buys a book that is paperback and fiction?

lyudmila [28]

Let

x-----------> the probability that someone buys a book that is paperback

y----------> the probability that someone buys a book that is a fiction

P-----> the probability that someone buys a book that is paperback and fiction

we know that

$x=0.65$

$y=0.45$

$P=x*y$

substitute the values

$P=0.65*0.45=0.2925$

therefore

<u>the answer is the option A</u>

$0.2925$

5 0

3 years ago

Read 2 more answers

There are several climate zones on Earth. One type of zone is identified by shading on the map below. Together, the darker shade

nikdorinn [45]

Answer:

Step-by-step explanation:

7 0

3 years ago

C=6π yd, find area, answer in terms of π

Elenna [48]

Answer:

$A=9\pi\ yd^2$

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The circumference is equal to

$C=2\pi r$

we have

$C=6\pi\ yd$

substitute

$6\pi=2\pi r$

Solve for r

$r=3\ yd$

step 2

Find the area

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=3\ yd$

substitute

$A=\pi (3)^{2}$

$A=9\pi\ yd^2$

8 0

3 years ago