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Eddi Din [679]
3 years ago
11

How do I solve this algebra equation X+7=2x-8

Mathematics
2 answers:
ale4655 [162]3 years ago
5 0
You know that we have to simplify the algebra equation, so first you have to combine x and 2x. X + 2x equals to 3x. Now that we combined x and 2x which makes 3x, we have to do 7 and -8. 7 + -8 which equals to -1. Therefore, the answer to this algebra equation is 3x + -1.
FromTheMoon [43]3 years ago
5 0
X= -7+2x-8
-2x+x= -7-8
-x= -15 then multiply by -1 on both
-1(-x)= -1(-15) sides to get rid of all the x=15 negative on the x and 15
You might be interested in
-10.7474..... as a fraction
kondaur [170]

In fraction, it would be:

-107474/10000

6 0
3 years ago
Given that (-1,-1) is on the graph of f(x), find
nalin [4]

Answer:

(-1, -6)

Step-by-step explanation:

f(x -5) is another way to say f(x) - 5

And f(x) - 5 is going down the y axis 5 points, so you end at (-1, -6)

8 0
3 years ago
magazine provided results from a poll of adults who were asked to identify their favorite pie. Among the ​respondents, ​% chose
Alex73 [517]

Complete Question

A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 ​respondents, 12 ​% chose chocolate​ pie, and the margin of error was given as plus or minus 5 percentage points.What values do ​ \r p ,  \ \r q, ​n, E, and p​ represent? If the confidence level is 90​%, what is the value of \alpha ​?

Answer:

a

   \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

   E is the  margin of error is E  =  0.05

   \r  q represents the proportion of those that did not chose chocolate​ pie i.e                        \r  q  =  1-  \r p

b

   \alpha  = 10\%

Step-by-step explanation:

Here

    \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

    \r  q represents the proportion of those that did not chose chocolate​ pie i.e  

      \r  q  =  1-  \r p

      \r  q  =  1-  0.12

      \r  q  = 0.88

     E is the  margin of error is E  =  0.05

Generally \alpha is the level of significance and it value is mathematically evaluated as

     \alpha  = ( 100 -  C  )\%

Where  C is the confidence level which is given in this question as  C =  90  \%

So  

    \alpha  = ( 100 -  90  )\%

    \alpha  = 10\%

5 0
3 years ago
How much interest does a $318 investment earn at 9% over one year
Vinil7 [7]
The interest earned by $318 investment is 9/100 x 318= $28.62
4 0
3 years ago
PLEASE ANSWER THIS!! 16 POINTS!<br><br> (2/3)*2 + 1/2
alexira [117]

Answer:

=7/6

Step-by-step explanation:

Join 4/3=1:7/3

7/3/2

Apply the fraction rule:=

7/3x2

Multiply the numbers=

7/6

5 0
3 years ago
Read 2 more answers
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