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elena-14-01-66 [18.8K]
4 years ago
8

4x -1 = -x+9 i need help its for a testtt

Mathematics
2 answers:
allsm [11]4 years ago
6 0

Answer:

x = 2

Step-by-step explanation:

4x - 1 = -x + 9

add x to both sides.

4x + x - 1 = 9

add 1 to both sides

4x + x = 9 + 1

5x = 10

x = 2

Luda [366]4 years ago
5 0

Answer:

\boxed {x = 2}

Step-by-step explanation:

Solve for the value of x:

4x - 1 = -x + 9

-Take x and add it to 4x:

4x - 1 + x = -x + x + 9

5x - 1 = 9

-Add 1 to both sides:

5x - 1 + 1 = 9 + 1

5x = 10

-Divide both sides by 5:

\frac{5x}{5} = \frac{10}{5}

\boxed {x = 2}

Therefore, the value of x is 2.

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Which statement is true about the expression 12- 7 + 3?
Mrrafil [7]

Answer:

I don't see any statements here.

Anyway, the answer is 8.

12 - 7 + 3 = 8

3 0
3 years ago
One pump can empty a pool in 4 days, whereas a second pump can empty the pool in 10 days. How long will it take the two pumps, w
gtnhenbr [62]

Answer:

20/7 days (just less than 3 days)

Step-by-step explanation:

Recall that (1 job) = (rate)(time), so time = (1 job) / (rate).

Set up and solve the following equation:

  1 job

------------------------------- = time required for 2 pumps working together

1 job         1 job

---------- + -------------

4 days      10 days

This comes out to:

              1 job

------------------------------------------- = time required

10 job-days      4 job-days

------------------ + -----------------

   40 days           40 days

or:

    1 job

-------------------- = (40/14) days, or 20/7 days (just less than 3 days)

14 job·days

-----------------

   40 days  

7 0
3 years ago
Solve for x: 3-x = 3(6x-9). Describe the process used to solve the equation and show each step.
FromTheMoon [43]

Answer:

x=1.578

Step-by-step explanation:

Given equation is 3-x = 3(6x-9)

We need to find the value of x

3-x = 3(6x-9)

Distribute 3 in the right-hand side  

3-x=18x-27

Add both sides x

3-x+x=18x+x-27\\3=19x-27

Now, add both sides 27

3+27=19x-27+27\\30=19x

Divide both sides by 19

\frac{30}{19}=\frac{19x}{19}\\x=1.578

So, x=1.578

5 0
3 years ago
Multiply (2x-3) (3x+5)
murzikaleks [220]

Answer:

A, or +10x

Step-by-step explanation:

(2x-3)(3x+5)\\6x^2+10x-9x-15\\6x^2+x-15

Step two would've been

2x*5

Which equals

+10x

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3 years ago
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3 years ago
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