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jekas [21]
3 years ago
15

14x − 9 = 7x + 12 PLEASE

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Answer: x = 3

Step-by-step explanation:

collect the like terms, then calculate it.

14x - 7x = 12 + 9

divide both sides.

7x = 21

divide those again.

x = 3

Rudik [331]3 years ago
7 0

Answer:

3x

Step-by-step explanation:

14x − 9 = 7x + 12

     + 9          + 9

14x = 7x + 21

-7x   -7x

7x = 21

÷7   ÷ 7

x = 3

All you have to do is try to leave the variable on one side

Hope this helped!

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It's not fair :(<br> but I wont tell u
ddd [48]

Answer:

whats not fair?

Step-by-step explanation:

5 0
2 years ago
Dylan just started a running plan where he runs 14 miles the first week and then increases the number of miles he runs by 10% ea
Vladimir79 [104]

Answer:

36 miles

Step-by-step explanation:

Given - Dylan just started a running plan where he runs 14 miles the first

            week and then increases the number of miles he runs by 10% each

            week.

To find - If he keeps up this plan for 11 weeks, how many total miles would  

              Dylan have run ?

Proof -

1st week = 14 miles

2nd week = 14 + 10% of 14 = 14 + 1.4 = 15.4

3rd week = 15.4 + 10% of 15.4 = 15.4 + 1.54 = 16.94

4th week = 16.94 + 10% of 16.94 = 16.94 + 1.694 = 18.634

5th week = 18.634 + 10% of 18.634 = 18.634 + 1.8634 = 20.4974

6th week = 20.4974 + 10% of 20.4974 = 20.4974 + 2.04974 = 22.54714

7th week = 22.54714 + 10% of 22.54714 = 22.54714 + 2.254714 = 24.801857

8th week = 24.801857  + 10% of 24.801857  = 24.801857  + 2.4801857  = 27.2820427

9th week = 27.2820427  + 10% of 27.2820427  = 27.2820427+ 2.72820427  = 30.01024697

10th week = 30.01024697  + 10% of 30.01024697  = 30.01024697 + 3.001024697  = 33.01127167

11th week = 33.01127167  + 10% of 33.01127167  = 33.01127167 + 3.301127167  = 36.31239884 ≈ 36

∴ we get

Total miles Dylan would run = 36 miles.  

8 0
3 years ago
Algebra question<br>1/8m = 6 to find m
coldgirl [10]
1/8 m = 6
m = 48. Hope it helps! :) If you could vote my answer as the brainiest, that would be awesome! :)
5 0
3 years ago
Read 2 more answers
If x is 5, then 6x =<br> 5x<br> 30x<br> 30
Wittaler [7]

Answer:

30

Step-by-step explanation:

If X is 5, then 6X is equal to 30. You can see to be able to get 30, you have to multiply 6 to X, which in this case is 5. So 6 times 5, you will now get the answer which is 30.

4 0
3 years ago
A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc d
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Answer:

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3 years ago
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