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Alexus [3.1K]
3 years ago
8

A=bx+cx+d solve for x

Mathematics
2 answers:
BigorU [14]3 years ago
8 0
(a/bc) - d = x is the answer
OleMash [197]3 years ago
7 0

Answer:

The value of the equation for x is x=\frac{a-d}{b+c}.

Step-by-step explanation:

Consider the provided equation.

a=bx+cx+d

We need to solve the equation for x.

Subtract d from both sides.

a-d=bx+cx+d-d

a-d=bx+cx

Take x common from right side.

a-d=x(b+c)

Divide both the sides by b+c.

\frac{a-d}{b+c}=\frac{x(b+c)}{b+c}

x=\frac{a-d}{b+c}

Hence, the value of the equation for x is x=\frac{a-d}{b+c}.

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NarStor, a computer disk drive manufacturer, claims that the median time until failure for their hard drives is more than 14,400
Ne4ueva [31]

Answer:

The test statistics is  t  =  -1.727

Step-by-step explanation:

From the question we are told that

The data given is  

   330 620 1870 2410 4620 6396 7822 81028309 12882 14419 16092 18384 20916 23812 25814

 The population mean is  \mu  =  14400

    The  sample  size is  n =  16

  The  null hypothesis is  \mu \le  14400

    The  alternative hypothesis is  H_a  :  \mu > 14400

The sample mean is mathematically evaluated as

  \= x  =  \frac{\sum x_i}{n}

So

   \= x  =  \frac{330+ 620+ 1870 +2410+ 4620+ 6396+ 7822+ 8102+8309+ 12882+ 14419+ 16092+ 18384 +20916+ 23812+ 25814 }{16}

=>  \= x = 10799.9

The  standard deviation is mathematically represented as

      \sigma =\sqrt{\frac{ \sum (x_i - \=x)^2}{n}}

So

\sigma =\sqrt{\frac{(330- 10799.9)^2 + (620- 10799.9)^2+ (1870- 10799.9)^2 +(2410- 10799.9)^2 + (4620- 10799.9)^2 +(6396- 10799.9)^2 +(7822- 10799.9)^2 }{16}}  \ ..

   ..\sqrt{ \frac{(8102 - 10799.9)^2 +(8309 - 10799.9)^2 + (12882 - 10799.9)^2 + (14419 - 10799.9)^2 + (16092 - 10799.9)^2 + (18384 - 10799.9)^2 +(20916 - 10799.9)^2  }{16}} \ ...

  \ ... \sqrt{\frac{(23812 - 10799.9)^2 +(25814 - 10799.9)^2 }{16}}

=>  \sigma  =  8340

  Generally the test statistic is mathematically represented as

  t =  \frac{10799.9- 14400}{ \frac{8340}{\sqrt{16} } }

t  =  -1.727

From the z-table  the p-value is  

     p-value  = P(Z > t) =  P(Z >  -1.727) =  0.95792

 From the values obtained we see that

        p-value  >  \alpha  so we fail to reject the null hypothesis

Which implies that the claim of the NarStor is wrong

5 0
3 years ago
PLEASE SOMEONE HELP. I’m FAILING MATH . WILL NAME BRAINLIEST AND ITS WORTH 30 points!!
weqwewe [10]
I don’t really understand this put a person with genius role is answering so i hope you get your answer! goodluck
8 0
3 years ago
Read 2 more answers
HELP!!!
Jlenok [28]
You can compose, or create, a parallelogram (a four-sided shape with two sets of opposite, parallel sides) using two shapes, such as triangles or squares. You can decompose, or take apart, a parallelogram by dividing it from opposite corners, either vertically or horizontally.
6 0
2 years ago
5x -1=3x -5<br>explain also​
belka [17]
First add 1 to each side. It will leave you with an equation like this. 5x=3x -4

Next, subtract 3x from each side. It will leave you with an equation like this. 2x= -4

Lastly, divide each side by 2 so we can get x by itself.

ANSWER: x=-2
4 0
3 years ago
Please help me because I don't understand how to do it.:)
lana66690 [7]

Answer:

C  Yes, 75+ 2.5*60 = 225

Step-by-step explanation:

The charges for the electrician

1st hour = 75

Additional hours 60

We have 3 1/2 hours of labor

The first hour is 75 dollars

3 1/2 - 1 = 2 1/2

There will be 2 1/2 hours at the 60 dollar rate

75 + 60 * 2.5 =

75 + 150

225

8 0
3 years ago
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