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saveliy_v [14]
3 years ago
13

Which algebraic expression shows the average melting points of helium, hydrogen, and neon if h represents the melting point of h

elium, j represents the melting point of hydrogen, and k represents the melting point of neon?
A. h + j + k
B. hjk
c. h+j+k over 3
d. hjk over 3
Mathematics
2 answers:
Ainat [17]3 years ago
8 0

Answer:

c. h+j+k over 3

Step-by-step explanation:

We know that,

\text{Average}=\frac{\text{Sum of observations}}{\text{Total number of observation}}

Here, h, j and k represents the melting point of helium, hydrogen and Neon respectively,

Since, the sum of melting points = h + j + k,

Also, the total number of gases = 3,

Thus,

\text{Average melting points}=\frac{h+j+k}{3}

Or (h+j+k) over 3

⇒ Option c is correct.

LenKa [72]3 years ago
4 0
Average = mean = sum of the values / number of data

Values = h, j, and k

Number of data = 3

Sum of the values = h + j + k

Mean = [h + j + k] / 3

=> Answer: option c. [h+j+k] over 3
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Step-by-step explanation:

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3 years ago
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Will choose brainliest! Please help! (This is Khan Academy)
NeTakaya

Answer:

Option B. A = (5/6)^-⅛

Step-by-step explanation:

From the question given above, we obtained:

(5/6)ˣ = A¯⁸ˣ

We can obtain the value of A as follow:

(5/6)ˣ = A¯⁸ˣ

Cancel x from both side

5/6 = A¯⁸

Recall:

M¯ⁿ = 1/Mⁿ

A¯⁸ = 1/A⁸

Thus,

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Cross multiply

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Take the 8th root of both sides

A = ⁸√(6/5)

Recall

ⁿ√M = M^1/n

Thus,

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Therefore,

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8 0
3 years ago
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Answer:

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Any line perpendicular to this given line has a slope which is the negative reciprocal of the slope previously found:

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Slope of perpendicular line = ------------ = - -----

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A
DochEvi [55]

Answer:

C

Step-by-step explanation:

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