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AveGali [126]
3 years ago
10

18°C = _____ A)-255 K B)0 K C)18 K D)291 K

Mathematics
2 answers:
kakasveta [241]3 years ago
7 0

Answer:

D)291 K


Step-by-step explanation:

18°C+273.15=291K

Galina-37 [17]3 years ago
6 0

Answer:

D)291 K

Step-by-step explanation:

You can just google Celsius to Fahrenheit on google XD

But the formula to convert from Celsius to Fahrenheit is:

°C + 273.15 = 273.15 K

So, 18 degrees Celsius + 273.15 Kelvin = approximately 291 K


done.. :D

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Given a polyhedron with 12 faces and 30 edges, how many vertices does it have?
larisa86 [58]

Answer:

It should have 20 vertices, and the name is dodecahedron

8 0
3 years ago
Find the number to sides of a regular polygon if the sum of the interior angles are 7560
Stels [109]
Use S=(n-2)180 
S is the sum and N is the number of sides
If you know that the sum is 7560 then plug that in for S
7560=(n-2)180
Then solve for n
7560=180n-360 (note I used distributive property)
7560+360=180n
7920=180n
7920/180=n
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I hope this helps :)
6 0
3 years ago
7=-5/2 x + b<br>what is the value of b and please explain.​
Talja [164]

Answer:

b = 5/2x + 7

Step-by-step explanation:

b + (-5/2x) = 7

b - 5/2x = 7

b = 5/2x + 7

3 0
2 years ago
VOTE!
Stells [14]
The answer for this is A.
7 0
3 years ago
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The diagonal of a square is x units. What is the area of the square in terms of x? square units square units 2x square units squ
STatiana [176]

For this case we have that by definition, if we draw the diagonal of a square two rectangular triangles are formed. If the diagonal measures "x", then the Pythagorean theorem is fulfilled:

l ^ 2 + l ^ 2 = x ^ 2

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l: It's the side of the square.

2l ^ 2 = x ^ 2\\l ^ 2 = \frac {x ^ 2} {2}

We know that the area of a square is given by:

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So, the area is:

A = \frac {x ^ 2} {2}

Answer:

A = \frac {x ^ 2} {2}

8 0
3 years ago
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