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mixer [17]
3 years ago
15

Which is the solution to -3k-2k+12 = 2k-9?​

Mathematics
2 answers:
Lisa [10]3 years ago
8 0

Answer:

k =3

Step-by-step explanation:

-3k-2k+12 = 2k-9

-5k+12 = 2k -9

Add 5k to each side

-5k+5k+12 = 2k+5k-9

12 = 7k-9

Add 9 to each side

12 +9 = 7k-9+9

21 = 7k

Divide each side by 7

21/7 = 7k/7

3 =k

yarga [219]3 years ago
4 0

<em>answer = 3 \\ solution \\  - 3k - 2k + 12 = 2k - 9 \\ or, \:  - 3k - 2k - 2k =  - 12 - 9 \\ or, \:  - 5k - 2k =  - 21 \\ or, \:  - 7k =  - 21 \\ or, \: k =  \frac{ - 21}{ - 7}  \\ k = 3 \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment</em>

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kkurt [141]

\huge\bold\color{blue}{⁂Answer:}

\bold{ -  \frac{6 \sqrt{x}  -  x  -  9 }{2(x - 9)} }

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7 0
3 years ago
During their summer break from school. Hortencia and Alex decide to paint houses to earn money. Hortencia charges a flat rate of
PIT_PIT [208]

Answer:

The answer to your question is: 20 hours.

Step-by-step explanation:

Data

Hortencia = $350

Alex $18 / h

# hours Alex must paint to make more money than Hortencia = ?

Process

Equation                      18 x n > 350

                                     n > 350 / 18

                                     n > 19.4 hours

If Alex work 19.4 hours, he will make the same amount of money than Hortencia, then He needs to work 20 hours.

4 0
3 years ago
How do I find the missing angle ??
Anettt [7]

Angle measure of triangle

= 180 degrees

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Happy to help. Please mark as brainliest!

6 0
3 years ago
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lesya [120]
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3 0
3 years ago
Given the relationship 2x2 + y3 =10, with y &gt; 0 and dy, dt = 3 units/min., find the value of dx, dt at the instant x = 1 unit
Allisa [31]
I believe it is -1/9. 
6 0
3 years ago
Read 2 more answers
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