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2 years ago

Simplify the expression to a + bi form: (12-6i)-(7+8i) (12−6i)−(7+8i)

Mathematics

1 answer:

Karo-lina-s [1.5K]2 years ago

8 0

Answer:

$5-14i$

Step-by-step explanation:

$(12-6i)-(7+8i)\\\\12-6i-7-8i\\\\5-14i$

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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

$X=104.1-80=-52.90$

$X=24.1decibels$

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3 years ago

Which referent could you use for 1 m?

sergij07 [2.7K]

Answer:

Just #1

Step-by-step explanation:

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3 years ago

What is the median of this data set?

9966 [12]

The answer is C. 22 :)

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3 years ago

Read 2 more answers

How many squares are in the 20th case

pentagon [3]

Answer:

total 20 squares in matrix of size 4×3

Step-by-step explanation:

in square of size 1×1

six squares of size 2×2

2 squares of size 3×3

3 0

3 years ago

Can someone help me with problems J-L PLZZZ ITS URGENT DUE TOMORROW AND I REALLY NEED HELP AND IM SO TIRED

siniylev [52]

h. y / x^2

j. 0.00001

k. 0.000005

I. 0.025

m. 8 times 10^-3

n. 1.25 times 10^-4

o. 5 times 10^-7

p. 0.000000001

I only did the ones I see, hope it helps.

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2 years ago