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3 years ago

Is KLMN below a rectangle?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

6 0

Should be C right? A rectangle demands that the diagonals are congruent

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Use the formula L= 10 log 10 R, where Is the loudness of a sound and R is the sound's relative intensity. to find out how much l

WINSTONCH [101]

Answer:

$X=24.1decibels$

Step-by-step explanation:

From the question we are told that:

Loudness function $L= 10 log_{10} R$

Sound of a person $S_p=80\ decibels\ or 10^8$

Number of persons talking $n=20 people$

Generally the Relative intensity for 20 people is mathematically given by

Relative intensity for $R_{20}=$ $20*10^8$

Relative intensity for $R_{20}=$ $20^8$

Generally the loudness for 20 people is mathematically given by

$L_{20}= 10 log_{10} R$

$L_{20}= 10 log_{10} 20^8$

$L_{20}= 10 (8 log_{10} 20)$

$L_{20}= 104.1 decibels$

Therefore increase in loudness X is given as

$X=104.1-80=-52.90$

$X=24.1decibels$

5 0

3 years ago

Combine the like terms to create an equivalent expression:

Sphinxa [80]

Answer:

Step-by-step explanation:

−k−(−8k) = -k +8k = 7k

6 0

3 years ago

What is the equation of a horizontal line passing through the point (−7, 5)?

blsea [12.9K]

Hello :
an equation is : y-5 = 0( x+7)...(the slope =0 ' horizontal line ' ) y=5

4 0

3 years ago

What is the value of hin the figure below? In this diagram, ABAD ~ ACBD.

VashaNatasha [74]

Answer:

F. 8

Step-by-step explanation:

The ratio of the long side to the short side is the same in similar triangles. The long side of triangle BAD is AD, which has length 20-4 = 16.

BD/DE = AD/BD

h/4 = 16/h

h^2 = 64 . . . . . . . multiply by 4h

h = 8 . . . . . . . . . . take the square root (matches selection F)

_____

Comment on this geometry

BD = √(AD·DC) is called the "geometric mean" of the segments AD and DC. This geometry has some other geometric mean relationships as well:

BC = √(AC·DC)

BA = √(AC·AD)

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3 years ago

Given F(x) = 3x 2 - 4, find F(-√3). a)-13 b)5 c)23

svet-max [94.6K]

I want to say 5 but I'm not sure

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3 years ago

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