1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LekaFEV [45]
3 years ago
9

9(k-4)-7k=32-2(k-8)

Mathematics
2 answers:
vekshin13 years ago
6 0

Answer k=52

Step-by-step explanation:

9k-36-7k=32-2k-16

combine like terms

2k-36=16-2k

move the -2k to the other side

k-36=16

than you do

36+16=52

Answer

k=52

IrinaK [193]3 years ago
4 0

Answer: k=21

Step-by-step explanation:

1. Distribute the 9 to the k and the -4 in the parentheses.

9 · k = 9k and 9 · -4 = -36

You now have 9k - 36 - 7k. You can combine the like terms of 9k and -7k and get 2k, giving you 2k - 36.

2. For the other side of the equation, you also distribute -2 to the k and -8 in the parantheses.

-2 · k = -2k and -2 · -8 = 16

You now have 32 - 2k + 16. Combine the like terms 32 and 16 (32 + 16) and you get 48. This gives you the equation 48 - 2k.

3. Now you should have the equation 2k - 36 = 48 - 2k.

You want the k on one side of the equation so you need to cancel out one of them. I cancelled out -2k by adding 2k to it. You also need to add this 2k to your 2k on the other side of the equation.

Ex: 2k - 36 = 48 - 2k

   +2k                +2k

4. Now you should have 4k - 36 = 48. You need to get 4k by itself so cancel out -36 from both sides by adding 36 to -36 and adding 36 to 48.

You should now have 4k = 84 (48 + 36 = 84).

Divide both sides by 4 to get k by itself. 4 divided by 4 makes k and 84 divided by 4 equals 21. This makes k = 21, which is your answer.

   

You might be interested in
Can you please help me with this problem?
Hoochie [10]
Here you have to find which each variable is, for this you start of picking one equation,

x + 2y + 6z = 4
-3x + 2y - 2 = -4
4x + 2z = 16

depending the equation you pick you multiply that by a certain number that will give you the opposite of one of the other equations,
-1(x + 2y + 6z = 4)
= -x -2y - 6z = -4

With this you add or subtract it with the equation that has the same number or variable, or both,
In this case it will be the equation,
-3x + 2y + 6z = 4
You can use this one or the third equation since both have a positive 2y which will cancel with -2y from the new equation,
-x - 2y - 6z = -4
-3x + 2y -z = -4

= -4x -7z = -8
Now you since you just eliminated the variable (y) you now have 2 variables, and the last equation has only 2 variables, meaning now you find the answer to those to equations,

-4x -7z = -8
4x + 2z = 16

= -5z = 8
Now leave the variable by itself,
z = 8/5
Now you found the variable (z), with this just substitute on one of the equations we used to find (z) so you can find (x), after that substitute those answered to on of the original equations so you can find (y)




6 0
3 years ago
How would I find the diameter?
adell [148]
By measuring the width of the circle or sphere radius is half of the diameter
3 0
3 years ago
If the circumference is 34.54 units what is the radius
irinina [24]
<span>5.497211734394065. radius confirmed!</span>
7 0
3 years ago
Lol I’m so lazy<br> Click on the pic there is the question
masya89 [10]

Answer:

$212.55

Step-by-step explanation:

hope it helps and give brainliest

4 0
2 years ago
Read 2 more answers
What does x equal? <br> Thanks!
mel-nik [20]
X+x-17+39=180
2x+22=180
Subtract 22 from both sides
2x=158
X= 79
3 0
3 years ago
Read 2 more answers
Other questions:
  • Write 230.251 in expanded form
    7·2 answers
  • In timra’s math class, there are 12 boys and 15 girls. What is the ratio of boys to girls in timra’s math class
    12·1 answer
  • Jonathan is making his favorite pasta dish his mom ate 2/7 of the pasta his brother ate 1/6 of the pasta how much did they eat i
    7·2 answers
  • WATER TOWER One of the largest sphere water towers in the country is located in Edmond, Oklahoma. It is 218 feet tall and holds
    8·1 answer
  • What’s the probability of P(T)?
    12·1 answer
  • Caroline, Colin &amp; Sarah share some money.
    11·1 answer
  • Please help! Correct answers only please!
    10·2 answers
  • The large sphere has a diameter of 12 feet.
    14·1 answer
  • Which graph is likely to have a leading coefficient value of -1/8
    7·2 answers
  • No link just right answer
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!