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grandymaker [24]
2 years ago
10

How many sides do 5 triangles, 2 decagons, and 2 octagons have in all?

Mathematics
2 answers:
Vladimir [108]2 years ago
6 0

Answer:

51 sides

Step-by-step explanation:

triangles: 3 sides

decagons: 10 sides

octagons: 8 sides

3x2=15

2x10=20

8x2=16

add them =51 sides

TEA [102]2 years ago
6 0

Answer:

The answer is 51.

Step-by-step explanation:

Add 5 triangles,

Triangles (3 sides, 5 x 3 = 15, )

Decagons, (10 sides 10x2= 20) |  15+20=35

Octagons ( 8 sides. 8x2= 16.)    | 35+16=51.

Hope this helps.... :)

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Answer please!! Thanks!
sergij07 [2.7K]

Answer: 9.6 units

<u>Step-by-step explanation:</u>

The formula for the length of a diagonal (d) for a rectangular prism given length (L), width (w), and height (h) is: d² = L² + w² +  h²

Given: L = 8, w = 2, h = 5

 d² = 8² + 2² + 5²

 d² = 64 + 4 + 25

 d² = 93

√d² = √93

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8 0
3 years ago
3. Which number is a solution of the inequality? (1 point)<br> 8 2<br> 8<br> -1<br> 0
worty [1.4K]
I think it’s 8 can you answer my question
6 0
3 years ago
A coral reef grows 0.17 m every week. How much does it grow in 8 weeks? Write your answer in millimeters
Dmitry_Shevchenko [17]

ANSWER

Find out the how much does it grow in 8 weeks

To proof

As given

A coral reef grows 0.17 m every week.

now for the 8 weeks

coral reef grows in the 8 weeks = 8× 0.17

                                                      = 1.36 m

As

1 meter = 1000 millimeter

To convert  growth of  coral reef  in the millimeter

=  1.36 × 1000

= 1360 millimeter

Hence  1360 millimeter be the coral reef grows  in 8 weeks

4 0
4 years ago
Solve the following quadratic by<br> completing the square.<br> y = x2 - 6x +2
eduard

Answer:

Roots of the equation are  (−3−√7) , (−3+√7)

Step-by-step explanation:

For solving a quadratic equation using completing the square method:

  • set the value of 'y' = 0
  • add and subtract the square of half of the coefficient of x.
  • solve the obtained equation for 'x'

given equation:

y = x^2 - 6x +2

0 = x^2 - 6x + 2

0 = x^2 - 3^2 + 3^2 -6x +2

0 = (x-3)^2 -7

7 =  (x-3)^2

±\sqrt{7} = x-3

±\sqrt{7} + 3 = x

learn more about quadratic equations at

brainly.com/question/17177510

#SPJ10

4 0
2 years ago
30. A model train is 4 inches long. If the
madreJ [45]
I think it is 192 inches long?
7 0
3 years ago
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