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Sonja [21]
3 years ago
6

2-(3x-4)=2x-9 Please give step by step answer!! Thanks!

Mathematics
2 answers:
kirza4 [7]3 years ago
7 0

Simplify both sides of the equation

2-(3x-4)=2x-9

2+-1(3x-4)=2x-9

Distribute the negative sign

2+-1(3x)+(-1)(-4)=2x-9

2+-3x+4=2x-9

2+-3x+4=2x+-9

Combine like terms

(-3x)+(2+4)=2x-9

-3x+6=2x-9

Subtract 2x from both sides

-3x+6-2x=2x-9-2x

-5x+6=-9

Subtract 6 from both sides

-5x+6-6=-9-6

-5x=-15

Divide both sides by -5

-5x/5=-15/-5

x=3


I hope that's help !


egoroff_w [7]3 years ago
4 0
First put the -1 into the 3x and -4, so it looks like 2-3x+4=2x-9, then combine 2 and 4, (-3x+6=2x-9), then subtract 2x from both sides (-5x+6=-9) then subtract 6 to both sides so -5x=-15, then divide by 5 so x=3 hope this helps!! sorry i messed up the first time
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Answer:

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Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of <em>n</em> terms of an arithmetic sequence:

S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}

We have

a_1=2\\d=17-2=32-12=47-32=15\\n=50

Substitute:

S_{50}=\dfrac{[2\cdot2+(50-1)\cdot15]\cdot50}{2}=(4+49\cdot15)\cdot25=(4+735)\cdot25\\\\=739\cdot25=18,475

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I feel like it’s either answer 2 or 4. i just don’t understand the -9 part
harina [27]

Answer:

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Step-by-step explanation:

let the number be n

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Given:

Current population = x

The population of a city is expected to decrease by 6% next year.

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The expression that represents the expected population next year. ​

Solution:

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Current population = x

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Expected population next year = Current population - 6% of Current population

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Therefore, the expression for the expected population next year is 0.94x.

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