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Yakvenalex [24]
3 years ago
11

Is -5 a solution to the equation 6x+5=5x+8+2x

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
7 0
6x+5=5x+8+2x
Add 2x to 5x
6x+5=7x+8
Subtract 6x from both sides
5=x+8
Subtract 8 from both sides
Final Answer: -3=x

And so no, -5 is not the solution to this equation.
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Anyone help???<br> Thank you<br> need it in 3 min
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Answer:

$40.352

Step-by-step explanation:

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Carlos is mailing packages. Each small package costs him $2.40 to send. Each large package costs him $2.90. How much will it cos
aalyn [17]

Answer:

$11.10

Step-by-step explanation:

1 small package = $2.40

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1 small package + 3 large packages.

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The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana should be made legal. If we w
Sati [7]

Answer:

The sample size is  n  = 600

Step-by-step explanation:

From the question we are told that

    The  sample proportion is  \r  p = 0.48

     The  margin of error is  MOE  =  0.04

Given that the confidence level is 95%  the level of significance is mathematically represented as

        \alpha  =  100 - 95

        \alpha  =  5 \%

        \alpha  =  0.05

Next  we obtain the critical value of  \frac{\alpha }{2} from the normal distribution table , the values is

                   Z_{\frac{\alpha }{2}  } =  1.96

The reason we are obtaining critical value of    \frac{\alpha }{2} instead of    \alpha is because  

\alpha represents the area under the normal curve where the confidence level interval (  1-\alpha) did not cover which include both the left and right tail while  

\frac{\alpha }{2} is just the area of one tail which what we required to calculate the margin of error

Generally the margin of error is mathematically represented as

      MOE  =  Z_{\frac{\alpha }{2} } *  \sqrt{ \frac{\r p(1-  \r p )}{n} }

substituting values

          0.04= 1.96*  \sqrt{ \frac{0.48(1-  0.48 )}{n} }

         0.02041 = \sqrt{ \frac{0.48(52 )}{n} }

         0.02041 = \sqrt{ \frac{ 0.2496}{n} }

          0.02041^2  = \frac{ 0.2496}{n}

           0.0004166 = \frac{ 0.2496}{n}

=>       n  = 600

   

5 0
4 years ago
Simplify the expressions. Show your work. (x + 6)^2
FromTheMoon [43]
The answer is x^2+12x+36
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3 years ago
Please HELP! BEEN ASKIN FOR 2 HOURS, PLEASE HELP, I WILL MARK YOU AS BRAINLIEST! PLEASE! HELP!
Alex787 [66]

Answer:

A: 30 m

B: 14 boxes

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Step-by-step explanation:

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D: 20% off 100% = 80%, which is equal to 0.8.    596.40*.8 = $477.12.

Hope it helps you!! :)

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3 years ago
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