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Sonbull [250]
3 years ago
6

–x – 7 = 16 please help me

Mathematics
2 answers:
atroni [7]3 years ago
7 0
Move the -7 to the right, its sign will flip (do you know why?)
Negate both sides to change -x to x

-x = 16+7
-x = 23
x = -23
slavikrds [6]3 years ago
6 0
-x-7=16  |+7 , add to both sides
<span>-x=23  |*(-1)
x = -23

Answer:
-23
,,,,,,,,,,,,,,,,,,,,
-x-7=-(-23)-7=23-7=16</span>
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What is the decibel level of the sound of a monster truck with intensity 10−2 watts per square inch? Use a logarithmic model to
lorasvet [3.4K]

Answer:

BdB = 68.10 decibels

Step-by-step explanation:

BdB = 10 log10 I / Io

where BdB is the sound intensity level in decibels, I is the sound intensity on the linear scale (W / m²) and I0 is the hearing threshold (10^-12 W / m²).

Converting Io de 10^-12 W/m² to W/in², tenemos

10^-12 W/m² = 1.5500031000062x10^-9 W/in²

So, applying the equation or formula,

BdB = 10 log10 (10 ^ -2 W/in² / 1.5500031000062x10^-9 W/in² )

BdB = 10 log10 (0.64516x10^6)

BdB = 10 log10 (6,451,600)

Being log10 (6,451,600) = 6.8096674332398761189214526331036, then

BdB = 10 x 6.8096674332398761189214526331036

BdB = 68.096674332398761189214526331036

BdB = 68.10 decibels

8 0
3 years ago
Read 2 more answers
Which function rule describes the number of centimeters y as a function of a number of millimeters x?
ira [324]
Y= 10x
y: number of cm
x: number of mm
7 0
3 years ago
Excel computes a two‑sample confidence interval for the difference in proportions just as well and as easily as Minitab and othe
True [87]

Answer:

See ecplanation below

Step-by-step explanation:

False.

On the Data analysis tool from excel we can conduct the following procedures:

Anova: Single Factor

Anova: Two factor with replication

Anova: Two factor without replication

Correlation

Covariance

Descriptive statistics

Exponential smoothing

F-test Two sample for Variances

Fourier analysis

Histogram

Moving Average

Random number generation

Rank and percentile

Regression

Sampling

t test: Paired two sample for means

t tes: Two sample assuming equal variances

t test: Two sample Assuming Unequal Variances

z test: Two sample for means

And as we can see we don't have an specific procedure just to obtain confidence interval for the difference of proportions. We need to remember that if we select a z test in excel, for example the output will contain the confidence associated to the parameter, but for this case is not too easy obtain a confidence interval for the difference of proportion like on a statistical software as (Minitab, R, SAS, etc) since all of these statistical softwares are elaborated in order to conduct all the possible statistical tests and confidence intervals for parameters of interest.

5 0
3 years ago
What phrases describes the expression of 16-y​
Jlenok [28]

<em>What phrases describes the expression of 16-y​</em>

<em>Answer: -9</em>

<em></em>

<em>Hope this helps~ </em>

6 0
3 years ago
Solve the equations with variable on both sides: 8x=10x + 20 A. X= -10 B. X= -35 C. X= -23 D. X= -40
liberstina [14]

The correct answer is A

A) 8(-10)=10(-10)+20 becomes -80 = -80

B) 8(-35)=10(-35)+20 becomes -280 \neq  -330

C) 8(-23)=10(-23)+20 becomes -184 \neq  -210

D) 8(-40)=10(-40)+20 becomes -320\neq   -380

7 0
3 years ago
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