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boyakko [2]
4 years ago
12

Solve the equation 6x + 12 = 4x - 18

Mathematics
2 answers:
Nataly [62]4 years ago
5 0

Answer:

x = 15

Step-by-step explanation:

collect like terms

6x+4x= -18-12

2x= -30

divide through by 2

2x/2= -30/2

x = -15

therefore

x = -15

kenny6666 [7]4 years ago
4 0

Answer:

X = -15

Step-by-step explanation:

6X +12 = 4X -18

Subtract 4X from both sides

2X +12 = -18

Subtract 12 from both sides

2X = -30

Divide both sides by 2

X = -15

So basically just have the unknown on one side and normal numbers on the other. Make sure you do the same thing on both sides.

Mark me as brainliest if this helps!

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Will give brainliest!!!! I am just doing this for fun!
viktelen [127]

Answer:

87

Step-by-step explanation:

Umm ok, thanks that was easy points!

If you flip it, you see 86 ...  88, so the middle number is 87!

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4 years ago
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Which one is a irrational number and why ?
Gnom [1K]

Answer: Option A, the square root of 40, is an irrational number.

Step-by-step explanation:

We are given 4 options:

- the sqrt of 40

- the sqrt of 49

- the sqrt of 100

- the sqrt of 9

All but one are perfect squares. Let's find out which one is not a perfect square.

The sqrt of 49 is 7. 7 times 7 is equal to 49.

The sqrt of 100 is 10. 10 times itself is equal to 100.

The sqrt of 9 is 3. 3 times 3 is equal to 9.

What about the square root of 40?

We know it's not a perfect square, and it's somewhere between 6 and 7. So, the hint from the question tells us that imperfect squares are irrational. Then this must be the answer!

4 0
4 years ago
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Ellen drove 220 miles in 3.5hours. To the nearest tenth, find Ellen's average speed in miles per hours
34kurt

divide total miles by time:

220 / 3.5 = 62.857

 rounded to nearest tenth = 62.9 miles per hour

5 0
3 years ago
What is the ratio of rise to run between the points (3,4) and (-2,0)?
Mila [183]
Ratio of rise can also mean the slope so let's find the slope given the two points.

slope formula;
m = y2 - y1/ x2 - x1     (3, 4), (-2, 0)                (x1, y1), (x2, y2)
 
m = 0 - 4/ -2 - 3
m = -4/-5
m = 4/5

so your answer is B.

hope this helps, God bless!
3 0
3 years ago
Express 26,345,000 in scientific notation
weqwewe [10]
26,345,000
2.6345 * 10^7
2.6345 e7
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3 years ago
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