7. Find the number of vertices of a polyhedron
having 10 faces and 12 edges​

Answers

Answer 1

Answer:

4

Step-by-step explanation:

Using Euler's rule for polyhedra

F + V - E = 2 ( F - faces, V- vertices, E- edges )

10 + V - 12 = 2

V - 2 = 2 ( add 2 to both sides )

V = 4


Related Questions

Which expression is equivalent to 4(3+5) - 3•9^2

Answers

Answer:

se eu não me engano é 11.962962963 por ai agora pega esse numero e faz como expressão equivalente ok

Step-by-step explanation:

espero ter ajudado.

please help I attached a picture ​

Answers

Answer:

option (3)

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

(h, k) are the coordinates of the vertex and a is a multiplier

Given

f(x) = x² - 12x + 7

Using the method of completing the square

add/subtract ( half the coefficient of the x- term )² to x² - 12x

f(x) = x² + 2(- 6)x + 36 - 36 + 7

      = (x - 6)² - 29

with vertex (h, k ) = (6, - 29 )

Directions:
1. Determine which type of angles are shown.
2. Then find the measure of the missing angles.

Answers

1. obtuse angle is shown, 45° is missing.
2. obtuse angle is shown, 29° is missing.
3. acute angle is shown, 65° is missing.
4. acute angle is shown, 40° is missing.
5. acute angle is shown, 42° is missing.
6. acute angle is shown, 100° is missing.
7 an obtuse angle and a acute angle are shown, 54° (for number 1) and 126° (for number 2) are missing.
8. an obtuse and a acute angle are shown, 45° (for 1) and 135° (for 2) are missing.

The room shown below right is 14 ft by 10 ft. Find the dimensions of each piece of furniture to the nearest tenth . 16))

Answers

Answer:

Follows are the solution to this question:

Step-by-step explanation:

Please find the image file of the question:

The dresser dimension is:

[tex]L= 6.0 \ feet\\\\ W= 3.0 \ feet[/tex]

The bed dimension is:

[tex]L = 7.1\ feet\\\\W = 5.7\ feet[/tex]

 The table dimension is:

[tex]L = 2.8 \ feet\\\\W= 2.8 \ feet[/tex]

Angle 3 is equal to angle

Answers

Answer Equal to angle 5

what is the common difference of the arithmetic sequence 5,8,11,14?

Answers

Answer:

3

Step-by-step explanation:

8-5= 3

11-8= 3

14-11= 3

Answer:

common difference = difference between two consecutive number in a given series

hence,

8-5=3

common difference =3

Triangle QRS is isosceles with m(∠R) = 107°. What is m(∠Q)

Answers

Answer:

36.5 degrees

Step-by-step explanation:

An isosceles triangle is a triangle in which two angles are equal

The sum of angles in the triangle is 180°

If one of the angles is 107°, the sum of the other two angles is (180° - 107°) 73°

The size of each of the two angles is 73/2 = 36.5°

Help me out please I’ll mark brainliest

Answers

I believe the answer is ASA

PLEASE HELP ILL GIVE BRAINLESS IM GOING TO FAIL

Answers

x=20
AD= 23
DC= 23
AC= 46


The median means both sides of the line AC are equal.

Therefore: x+ 3 = 2x-17
and we can solve this for x

Subtract x from both sides
x-x = 2x-x -17
3 = x -17

Add 17 to both sides
3 +17 = x -17+17
20 = x

The length of AD is x + 3, replace x with 20:
20 + 3 = 23



The length of DC is the same as AD (because they’re separated by the median) so DC= 46

AC is the length of AD + DC,
23+23= 46.
AC= 46

One number is seven more than a second number. Six times the first is 10 less than 2 times
the second. Find the numbers.

The value of the first number is ___.
The value of the second number is ___.

Answers

Answer:

Step-by-step explanation:

The first number is

13

and the second number is

6

Explanation:

Let's let the first number be

n

and the second number be called

m

.

Then, from the first sentence we can write:

n

=

m

7

and from the second sentence we can write:

2

n

=

6

m

+

10

Substitute

m

7

for

n

in the second equation and solve for

m

:

2

(

m

7

)

=

6

m

+

10

2

m

14

=

6

m

+

10

2

m

14

2

m

10

=

6

m

+

10

2

m

10

14

10

=

6

m

2

m

24

=

4

m

24

4

=

4

m

4

m

=

6

Now substitute

6

for

m

in the first equation and calculate

n

:

n

=

6

7

n

=

13

Simplify: 5d + 3 + 2h + 1 + 3h + 2d

Answers

7d + 5h + 4

dhehshshep

Answer: 7d+5h+4

Step-by-step explanation: Combine Like Terms: 5d+3+2h+1+3h+2d

=(5d+2d)+(2h+3h)+(3+1)=7d+5h+4

Final Answer: 7d+5h+4

If I Helped, Please Mark Me As Brainliest, Have A Great Day :D

What is the value of X in the diagram below round to the nearest hundredths

Answers

b ) 22

11/9 = x/18

9x = 198

x = 22

Pleaseee helpp answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answers

Answer:

x = 146º

Step-by-step explanation:

opposite angles in a parallelogram are equal to each other, so x = 146º

look (this is what 2 + 2 equals)

Answers

5 (2 cups of vinegar+ 2 cups of baking soda = 5 cups of fizzy mess)

or 4

12 cos theta minus 16 sin theta is equal to zero find 2 sin theta + cos theta​

Answers

Answer:

2sinθ + cosθ = 2

Step-by-step explanation:

12 cos θ - 16 sinθ = 0

=> 3 cos θ -4 sin θ = 0

=> tanθ = 3/4

let P = 3x

B = 4x

=> H= 5x

=> sinθ = P/H = 3/5

cosθ = B/H = 4/5

2sinθ + cosθ

= 2× 3/5 + 4/5

= 6/5+4/5

= 10/5

= 2

=> 2sinθ + cosθ = 2

Answer:

2sinθ + cosθ = 2

Step-by-step explanation:

12 cos θ - 16 sinθ = 0

=> 3 cos θ -4 sin θ = 0

=> tanθ = 3/4

let P = 3x

B = 4x

=> H= 5x

=> sinθ = P/H = 3/5

cosθ = B/H = 4/5

2sinθ + cosθ

= 2× 3/5 + 4/5

= 6/5+4/5

= 10/5

= 2

Which student below wrote an addition statement with the greatest sum,
and what is the sum?

Answers

Answer is patrick 14

Look at the information below, decide what type of substance the paint is.
ANSWER NEEDED ASAP

Answers

Answer:

A mixture?

Step-by-step explanation:

Laura bought a notebook and a pencil for $4.50. The notebook cost twice the amount of the pencil. On your worksheet, solve the question and write your answer below. . How much was the pencil and how much was the notebook

Answers

Answer:

n+p=4.50

n=2p

2p+p=4.5

2p=4.5

p=$1.5

n=$3

Step-by-step explanation:

Answer:

Pencil: $1.50

Notebook: $3

Step-by-step explanation:

n = cost of notebook

p = cost of pencil

n + p = 4.5

n = 2p

substitute n into the first equation

2p + p = 4.5

3p = 4.5

p = 1.5

n = 2p

n = 2(1.5)

n = 3

GIVING BRAINLIEST!!! please help
Match the graphs to the correct answer

Answers

Answer:

If i answer you have to give me brainliest and go to photomath.com it will tell you the answer

Step-by-step explanation:

What part of 18 is 1

Answers

Answer:

1 / 18 = 5.555555555556%

Step-by-step explanation:

hope it helps

The  [tex]\frac{1}{18}th[/tex] part of 18 is equal to 1.

Fraction:

Let us consider that x part of 18 is equal to 1.

So that,

               [tex]x*18=1\\\\x=\frac{1}{18}[/tex]

Therefore, [tex]\frac{1}{18}th[/tex] part of 18 is equal to 1.

Learn more about the fraction here:

https://brainly.com/question/78672

There are 12 trees on the Smith’s property. The Smith’s plant some trees, and now there are 21 trees. How many trees t do the Smith’s plant?

Answers

Answer:

The Smith's planted 9 trees

Step-by-step explanation:

21-12=9

Because the Smith's ending amount is 21, and their beginning amount is 12 you subtract 21-12=9

Answer:

Well, there can be two answers. One of them can be 9, since they planted 9 MORE trees on top of the 12 already there. (21-12=9) The other answer can be 33 if you count all the trees they planted. (12+21=33)

Step-by-step explanation:



(x + 1)^7
Use Pascal's Triangle and Binomial.Theorem

Answers

Answer:

x⁷+7x⁶+21x⁵+35x⁴+35x³+21x²+7x+1

Step-by-step explanation:

(x + 1)⁷: Pascal's Triangle for (a+b)⁷

a₇+7a⁶b+21a⁵b²+35a⁴b³+... + 7a¹b⁶ + b⁷

x⁷+7x⁶+21x⁵+35x⁴+35x³+21x²+7x+1

median of 410, 400, and 375

Answers

Answer:

400

Step-by-step explanation:

375 , 400, 410 (arrange in asc or des)

median = (middle num) = 400

Hope its right!

Answer:

400

Step-by-step explanation:

2x - 4 < 12
???????????

Answers

Answer: x < 8

Reason: I did some math

Answer:

x<8

Step-by-step explanation:

what is the mean of this? 48, 12, 35, 57, 42, 15, 74, 29.
ILL GIVE U BRAINLYEST​

Answers

answer:

48 + 12 + 35 + 57 + 42 + 15 + 74 + 29 = 312

divide by number of numbers,

312 / 8 = 39

the mean is 39.

if correct, please mark the brainliest :)

Answer:

the mean is 39.

Step-by-step explanation:

Fill in the missing term on each line. Simplify any fractions.
2d + 10 = 10
2d =
Subtract 10 from both sides
d =
Divide both sides by 2

Answers

the answer is,......

d = 0

Find the value of the expression.
•(- 12
1
4

Answers

Answer:

try mat.h way it will help

Step-by-step explanation:

Jennifer and Chelsea each improved their yards by planting rose bushes and geraniums. They bought their supplies from the same store. Jennifer spent $146 on 6 rose bushes and 14 geraniums. Chelsea spent $57 on 1 rose bush and 7 geraniums. What is the cost of one rose bush and the cost of one geranium?

Answers

Answer:

$15.00

Step-by-step explanation:

Suppose 1 rose bush costs r dollars,

Suppose 1 geranium costs g dollars.

Here are 2 equations:

1)6r+14g=146

3r+7g=73

2)r+7g=57

r=57-7g

Put 2) in 1)

3(57-7g)+7g=73

171-21g+7g=73

98=14g

g=7

r=8

7+8=$15.00

Hope I helped!

Choose the numerical expression that matches the phrase.
Multiply 4 and 7, then add 3.
3 x 4 +7
Α.
B. 3 x 7 +4
C.4 x 7 + 3
D. 7 x 3 + 4​

Answers

Answer:

Multiple 4 and 7, then add 3 is equivalent to

C. 4 x 7 + 3

Answer:

C. 4 x 7 + 3

Step-by-step explanation:

→ Multiply 4 and 7

4 × 7

→ Then add 3

4 × 7 + 3

Give the angle measure represented by 2 rotations clockwise.
a. -720°
c. -360°
d. 360°
b. 720°

Answers

Answer: B: 720

Step-by-step explanation: One turn is 360

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