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3 years ago

Who can find the solution for this???? 4x=6(x-4)

Mathematics

2 answers:

Elenna [48]3 years ago

3 0

4x = 6(x-4)
4x = 6x - 24
-2x = -24
x = 12

Daniel [21]3 years ago

3 0

4x = 6x - 24
+ 24 To Each Side

4x + 24 = 6x
Subtract 4X From Each Side

24 = 2x

Divide Each Side By 2

12 = X

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The solution to 5-3x> 35 is either x >-10 or -10> x which solution is correct

maw [93]

Answer:

x < - 10

Step-by-step explanation:

Given

5 - 3x > 35 ( subtract 5 from both sides )

- 3x > 30

Divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity.

x < - 10 Or - 10 > x

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3 years ago

If 9a+6b+4c=7, what is -24b-16c-36a

Alexandra [31]

Answer:

-24b - 16c - 36a = -28

Step-by-step explanation:

Given the initial equation of 9a + 6b + 4c = 7 and looking at the second equation of -24b - 16c - 36a, I notice that all of the coefficients of the variables have been multiplied by a factor of -4. Since all of the factors have been multiplied by the same factor, multiplied the answer to the equation by a -4 as well will give us the answer to the problem. Since the original answer is 7, multiplying this answer by a factor of -4: (7)(-4) = -28.

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3 years ago

Convert the expression (√5)(∛5) to exponential form. Show your work

AnnZ [28]

Answer:

5 $\frac{1}{2}$ * 5 $\frac{1}{2}$

Step-by-step explanation:

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3 years ago

You do a study of hypnotherapy to determine how effective it is in increasing the number of hours of sleep subjects get each nig

brilliants [131]

Answer:

Confidence interval

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$

And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

Step-by-step explanation:

For this case we have the followig dataset:

DATA: 8.2; 9.1; 7.7; 8.6; 6.9; 11.2; 10.1; 9.9; 8.9; 9.2; 7.5; 10.5

We can calculate the mean and the deviation with the following formulas:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

$s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$\bar X= 8.98[/tex[tex]s = 1.29$

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=12-1=11$

The Confidence level is 0.95 or 95%, the value of significance is $\alpha=0.05$ and $\alpha/2 =0.025$ , and the critical value would be $t_{\alpha/2}=2.20$

Repplacing the info we got:

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$ And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

7 0

3 years ago

A manufacturer of batteries knows that 10% of the batteries produced by a particular production line are defective. A sample of

defon

I think you need only an answer without expanation so let's start.
a) $P = \frac{200!}{180!x20!} * 0,1^{20}*0,9^{180} = 0.093636$
b) $Probability = 0.5 + \frac{1}{2} (0.093636) = 0.54682$

5 0

4 years ago