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spayn [35]
3 years ago
9

Will mark brainliest! Please explain, because I don't understand how to do it.

Mathematics
1 answer:
butalik [34]3 years ago
4 0

Answer:

Step-by-step explanation: The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.

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If g(x)=2(x-4), find the value of x if g(x) =20<br><br><br>A. 32<br>B. 12<br>C. 14<br>D. 10​
SOVA2 [1]
I think it is 32, bc the value of x is 20 so your problem would look like this; 2 ( (20) - 4 )
5 0
3 years ago
A decibel is a logarithmic unit that can be used to measure the intensity of a sound. The function y = 10logx gives the intensit
Anna007 [38]

Answer:

The sound intensity of a whisper is 333.3 times the reference intensity

Step-by-step explanation:

Given : The function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity.

A whisper has a sound intensity of 30 decibels.

To find : Use your graph to help you complete the following statement. The sound intensity of a whisper is times the reference intensity.

Solution :

Graph is attached which shows their intersection at (1000,30).

We can also verify by substituting value.

We have given that a whisper has a sound intensity of 30 decibels.

Therefore, y=30 , Let log base 10

y = 10logx

30 = 10logx                              

\frac{30}{10} =logx

3=logx

Logarithmic property log_{x}b=a \Rightarrow b=x^a

x=10^3

x=1000

The ratio of the intensity of the sound to a reference intensity is 1000 decibels

The sound intensity of a whisper is times the reference intensity is

\frac{1000}{3}=333.33

The sound intensity of a whisper is 333.3 times the reference intensity.

7 0
3 years ago
Read 2 more answers
Please help with all 3
DerKrebs [107]

Answer:

1, volume=23×9×5

=1035

2, volume=(1/2×5×4)×20

... =200

3.

8 0
3 years ago
Read 2 more answers
Need help now btw i am in middle school
MAXImum [283]

Answer:

umm use internet?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which of the following is the minimum value of the equation y = 3x2 - 4x - 2?
natka813 [3]

Answer: 3x

Step-by-step explanation:

*Remember BIDMAS*

b- brackets i- Indices (exponents) d- division m- multiplication a- addition s- subtraction

(*Reminder* exponents can be written on a keyboard like 2 squared is 2^2)

you need to follow these steps to be able to solve any equation

if there is no brackets like yours then add to make it easier

3x^2 - 4x - 2 = (3x^2) - 4x - 2

From the steps I showed you indices is first so 3x multiplied by 3x is 9x  

now there is nothing left except for subtraction so solve from left to right always so 9x - 4x - 2 is 5x then 5x - 2 is 3x, x doesn’t change or gets subtracted.

i hope it helped :)

3 0
3 years ago
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