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2 years ago

What is the solution to this equation? 3[x] - 1 = 8

Mathematics

1 answer:

Yanka [14]2 years ago

8 0

Answer:

Step-by-step explanation:

The whole goal is to isolate the variable.

3x-1=8

1+3x-1=8+1 first add 1 to both sides of the equation to cancel out the -1

3x=9 now just divide 3 to both sides of the equation because the opposite of multiplication is division. So dividing 3 on both sides cancels out the 3 to isolate the x

3x/3=9/3

x=3

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PLZ HELP ANY1!!!!!!!!!!!

Ronch [10]

Its the last one because you plug in the 20(x) for example y=20x
and your table looks like this
x 0/2/4
y 0/40/80 y x
because 20(2)=40 then you would do the same with the rest of the equation
20(4)= 80 there fore the last on is your answer

3 0

2 years ago

I need help on this what is RS

lana [24]

Answer:

Step-by-step explanation:

If RS=TV

5x-9=2x+3

5x-2x=3+9

3x=12

x=4

RS is 5x-9

5(4)-9

20-9

6 0

1 year ago

182.6 is 83% of what number?

GarryVolchara [31]

I think the answer is <span>x=220</span>

7 0

2 years ago

What are the solutions of the system?

svetlana [45]

Answer:

Option C. No solution is the right answer.

Step-by-step explanation:

Here the given equations are y = x²+2x+3 -----(1)

and y = 4x-2 -------(2)

Now we substitute the value of y from equation 2 into 1.

x²+2x+3 = 4x-2

x²+2x+3-2x = 4x-2-2x

x²+3 = 2x-2

x²+3-2x = 2x-2x-2

x²-2x+3 = -2

x²-2x+5 = 0

Then value of $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

$=\frac{+2\pm \sqrt{4-4\times 1\times 5}}{2}$

$=\frac{2\pm \sqrt{4-20}}{2}$

Since in this solution √(-20) is not defined. Therefore there is no solution.

3 0

2 years ago

Read 2 more answers

The steps to solve it

pashok25 [27]

6(2k-3) is the answer to this problem.
make a distributive
take the 6 out of the equation and u have remaining 2k-3. 6(2k-3)

6 0

2 years ago