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3 years ago

Use Euler's formula to find the missing number.

Mathematics

2 answers:

Mrac [35]3 years ago

4 0

Euler's Formula states that:

$V-E+F=2$

where V is the number of Vertices, E is the number of Edges and F is the number of Faces. We have also been given that the number of vertices is 15 and the number of Edges is 24 . We have been asked to find the number of Faces, F.

The Euler's formula can be rearranged to to isolate F as:

$F=2-V+E$

Substituting the values we get:

$F=2-15+24=11$

Thus, option C is the correct option.

frez [133]3 years ago

3 0

Vertices: 15
Edges:24
Faces:?
Their are 12 faces

The Answer is D

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Which side lengths form s right triangle? A. 5,12,13 B. 4,4,8 C. 2,3,4 plz help

zzz [600]

Answer:

A 5,12,13

Step-by-step explanation:

workout Pythagorean theory and find the hypotenus

5 0

3 years ago

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Cloud [144]

Answer:

a - b2

Step-by-step explanation:

STEP 1 :

Trying to factor as a Difference of Squares:

1.1 Factoring: a-b2

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : a1 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares

Final result :

a - b2

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST! :)

7 0

2 years ago

Tickets for a basketball game cost $2 for students and $5 for adults. The number of students was 3 less than 10 times the number

34kurt

2x+5y=619
x=10y-3
________
2(10y-3) +5y=619
20y-6+5y=619
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6 0

2 years ago

Read 2 more answers

Use your calculator to select the best answer below:

bixtya [17]

Answer:

$-2\sqrt{a}$

Step-by-step explanation:

$\lim_{x \to a} \frac{a-x}{\sqrt{x} -\sqrt{a} } \\ =-\lim_{x \to a} \frac{x-a}{\sqrt{x} -\sqrt{a} } \\=-\lim_{x \to a} \frac{(\sqrt{x} -\sqrt{a})(\sqrt{x} +\sqrt{a})}{\sqrt{x} -\sqrt{a} } \\=- \lim_{x \to a} \sqrt{x} +\sqrt{a}\\=-2\sqrt{a}$

6 0

2 years ago

Coffee café mix 90 pounds of coffee that cost six dollars per pound the types of coffee used to make this makes you cost seven d

Troyanec [42]

Answer:

y = 60

Step-by-step explanation:

From the information we get:

x quantity of 4 dollars coffee used in the mix

y quantity of 7 dollars coffee used in the mix

For the quantity of coffee to be sold a 7 $/pound ( 90 pounds)

Then 6*90 = 540 $

Therefore

x + y = 90 and

4*x + 7*y = 540

A two equations system we solve for x and y

y = 90 - x

4*x + 7* ( 90 - x ) = 540

4*x + 630 - 7*x = 540

- 3*x = - 90

x = 30 pounds and

y = 90 - 30

y = 60

We should use 60 pounds of the seven $ coffee

4 0

2 years ago