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sladkih [1.3K]
4 years ago
14

What's the answer to: ‎X + 9 = 18 - 2x?

Mathematics
1 answer:
ser-zykov [4K]4 years ago
4 0
Remember you can do anything to an equation as long as you do it to both sides

x+9=18-2x
add 2x to both sides
2x+x+9=18+2x-2x
3x+9=18+0
3x+9=18
minus 9 both sides
3x+9-9=18-9
3x+0=9
3x=9
divide both sides by 3
(3x)/3=9/3
(3/3)x=3
1x=3
x=3
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GenaCL600 [577]
1 \frac{2}{3} + 2 \frac{1}{3} + 2 \frac{2}{3} =

\frac{3*1+2}{3} +  \frac{3*2+1}{3} +  \frac{3*2+2}{3} =

\frac{3+2}{3} +  \frac{6+1}{3} +  \frac{6+2}{3} =

\frac{5}{3} + \frac{7}{3} + \frac{8}{3} =

=  \frac{20}{3} h

In hours:

20 |_3
(2)....6hs
x60' 
------
120' |_3
(0)....40' 

Answer:
<span>6hs40min

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</span>\frac{20}{3} hs =  \frac{20}{3} *60' =  \frac{1200}{3} = 400'
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400' = 6*60' = 360' + 40' = 400' (True)
</span>Until

<span>6hs40min</span>
5 0
3 years ago
Geometry question number 21
Pie

Step-by-step explanation:

1st) Distribute 8 with x and 8 with -1 which will give you

8x-8=5x-35

2nd) Use opposite operation and add 8 both sides

8x-8=5x-35

+8 +8

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

8x=5x-27

3rd) subtract 5x from both sides

8x=5x-27

-5x= -5x

_______

3x=-27

4th) Divide 3 from both sides so -27 by 3

3x=-27

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3 3

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3 years ago
150pounds = what in kilograms
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this is your answer.

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

We have been given that Carter has a toy ire truck that sprays like the real thing! Carter's fire truck stores 6 liters of water inside its tank. All of the water in the tank is drained out in 3 minutes. We are asked to find the number of millimeters drained per minute.

First of all, we will convert 6 liters to milliliters.

1 liter = 1000 ml.

6 liters = 6*1000 ml = 6000 ml.

Now we will divide total milliliters by total time as:

\text{Milliliters of water drained per minute}=\frac{6000}{3}

\text{Milliliters of water drained per minute}=2000

Therefore, Carter's fire truck drain 2000 milliliters of water each minute.

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